diff --git a/docs/instructions/array_get.md b/docs/instructions/base/array_get.md
similarity index 100%
rename from docs/instructions/array_get.md
rename to docs/instructions/base/array_get.md
diff --git a/docs/instructions/base/array_set.md b/docs/instructions/base/array_set.md
new file mode 100644
index 0000000..45fee77
--- /dev/null
+++ b/docs/instructions/base/array_set.md
@@ -0,0 +1,41 @@
+# array_set
+
+Set an item in an array using "dot" notation.
+
+## Parameters
+
+* array (`array`, `instruction`) - The array to get the value from.
+* key (`string`, `instruction`) - The key to get the value for.
+* value (`any`, `instruction`) - The value to set.
+
+## Return
+
+(`array`) - The array with the new value set.
+
+## Exceptions
+
+* `EvaluationException` - If there was an error while evaluating one or more parameters.
+* `KeyException` - If the key is not found.
+* `TypeException` - If one or more parameters are not of the expected type.
+
+## Instruction Example
+
+```json
+{
+  "type": "array_set",
+  "_": {
+    "array": {
+      "foo": {
+        "bar": "baz"
+      }
+    },
+    "key": "foo.bar",
+    "value": "qux"
+  }
+}
+```
+
+### Last Updated
+
+Monday, December 26th, 2022.
+Written by [Netkas](https://git.n64.cc/netkas)
\ No newline at end of file
diff --git a/docs/instructions/get.md b/docs/instructions/base/get.md
similarity index 100%
rename from docs/instructions/get.md
rename to docs/instructions/base/get.md
diff --git a/docs/instructions/base/invoke.md b/docs/instructions/base/invoke.md
new file mode 100644
index 0000000..42b8495
--- /dev/null
+++ b/docs/instructions/base/invoke.md
@@ -0,0 +1,42 @@
+# invoke
+
+Invokes a method under a namespace.
+
+## Parameters
+
+* namespace (`string`, `instruction`) - The namespace to invoke the method under.
+* method (`string`, `instruction`) - The method to invoke.
+* parameters (`array`, `instruction`) - The parameters to pass to the method.
+* fail_on_error (`boolean`, `instruction`) - Whether to fail if the method throws an exception.
+
+## Return
+
+(`any`) - The return value of the method. See the method's documentation for more information.
+
+## Exceptions
+
+* `EvaluationException` - If there was an error while evaluating one or more parameters.
+* `TypeException` - If one or more parameters are not of the expected type.
+* `UndefinedMethodException` - If the method is not defined.
+* `Exception` - If the method throws an exception and `fail_on_error` is `true`.
+
+## Instruction Example
+
+```json
+{
+  "type": "invoke",
+  "_": {
+    "namespace": "system",
+    "method": "print",
+    "parameters": {
+      "value": "Hello, world!"
+    },
+    "fail_on_error": true
+  }
+}
+```
+
+### Last Updated
+
+Monday, December 29th, 2022.
+Written by [Netkas](https://git.n64.cc/netkas)
\ No newline at end of file
diff --git a/docs/instructions/base/set.md b/docs/instructions/base/set.md
new file mode 100644
index 0000000..de58359
--- /dev/null
+++ b/docs/instructions/base/set.md
@@ -0,0 +1,35 @@
+# set
+
+Sets aor overwrites a variable in the environment.
+
+## Parameters
+
+* name (`string`, `instruction`) - The name of the variable to get.
+* value (`any`, `instruction`) - The value to set.
+
+## Return
+
+(`null`) - Nothing.
+
+## Exceptions
+
+* `EvaluationException` - If there was an error while evaluating one or more parameters.
+* `TypeException` - If one or more parameters are not of the expected type.
+
+
+## Instruction Example
+
+```json
+{
+  "type": "set",
+  "_": {
+    "name": "foo",
+    "value": "bar"
+  }
+}
+```
+
+### Last Updated
+
+Monday, December 29th, 2022.
+Written by [Netkas](https://git.n64.cc/netkas)
\ No newline at end of file
diff --git a/src/RTEX/Objects/Program/Instructions/ArrayGet.php b/src/RTEX/Objects/Program/Instructions/Base/ArrayGet.php
similarity index 80%
rename from src/RTEX/Objects/Program/Instructions/ArrayGet.php
rename to src/RTEX/Objects/Program/Instructions/Base/ArrayGet.php
index c46a18a..b0b34ff 100644
--- a/src/RTEX/Objects/Program/Instructions/ArrayGet.php
+++ b/src/RTEX/Objects/Program/Instructions/Base/ArrayGet.php
@@ -2,7 +2,7 @@
 
     /** @noinspection PhpMissingFieldTypeInspection */
 
-    namespace RTEX\Objects\Program\Instructions;
+    namespace RTEX\Objects\Program\Instructions\Base;
 
     use RTEX\Abstracts\InstructionType;
     use RTEX\Abstracts\RegexPatterns;
@@ -30,7 +30,7 @@
          *
          * @var mixed
          */
-        private $Value;
+        private $Key;
 
         /**
          * The name of the variable to set
@@ -63,10 +63,11 @@
 
         /**
          * @return mixed
+         * @noinspection PhpUnused
          */
-        public function getValue(): mixed
+        public function getKey(): mixed
         {
-            return $this->Value;
+            return $this->Key;
         }
 
         /**
@@ -74,9 +75,9 @@
          * @throws InstructionException
          * @noinspection PhpMissingParamTypeInspection
          */
-        public function setValue($value): void
+        public function setKey($value): void
         {
-            $this->Value = InstructionBuilder::fromRaw($value);
+            $this->Key = InstructionBuilder::fromRaw($value);
         }
 
         /**
@@ -88,7 +89,7 @@
         {
             return InstructionBuilder::toRaw(self::getType(), [
                 'array' => $this->Array,
-                'value' => $this->Value
+                'key' => $this->Key
             ]);
         }
 
@@ -101,7 +102,7 @@
         {
             $instruction = new self();
             $instruction->setArray($data['array'] ?? null);
-            $instruction->setValue($data['value'] ?? null);
+            $instruction->setKey($data['key'] ?? null);
 
             return $instruction;
         }
@@ -115,17 +116,18 @@
          */
         public function eval(Engine $engine): mixed
         {
-            $value = $engine->eval($this->Value);
+            $key = $engine->eval($this->Key);
             $array = $engine->eval($this->Array);
 
+            /** @noinspection DuplicatedCode */
             if (!is_array($array))
                 throw new KeyException(sprintf('Cannot read from non-array value of type %s', Utilities::getType($array, true)));
-            if(!is_string($value) && !is_int($value))
-                throw new TypeException(sprintf('Cannot read from array with non-string value %s', Utilities::getType($value, true)));
-            if(!Validate::validateRegex($value, RegexPatterns::ArrayQuery))
-                throw new KeyException(sprintf('Cannot read from array with invalid query %s', $value));
+            if(!is_string($key) && !is_int($key))
+                throw new TypeException(sprintf('Cannot read from array with non-string value %s', Utilities::getType($key, true)));
+            if(!Validate::validateRegex($key, RegexPatterns::ArrayQuery))
+                throw new KeyException(sprintf('Cannot read from array with invalid query %s', $key));
 
-            $keys = explode('.', $value);
+            $keys = explode('.', $key);
             $result = $array;
             foreach ($keys as $key)
             {
@@ -135,7 +137,7 @@
                 }
                 else
                 {
-                    throw new KeyException(sprintf('Key "%s" does not exist in array (%s)', $key, $value));
+                    throw new KeyException(sprintf('Key "%s" does not exist in array (%s)', $key, $key));
                 }
             }
 
@@ -148,9 +150,9 @@
         public function __toString(): string
         {
             return sprintf(
-                self::getType() . ' (array: %s, value: %s)',
+                self::getType() . ' %s[%s]',
                 Utilities::entityToString($this->Array),
-                Utilities::entityToString($this->Value)
+                Utilities::entityToString($this->Key)
             );
         }
     }
\ No newline at end of file
diff --git a/src/RTEX/Objects/Program/Instructions/Base/ArraySet.php b/src/RTEX/Objects/Program/Instructions/Base/ArraySet.php
new file mode 100644
index 0000000..753c32b
--- /dev/null
+++ b/src/RTEX/Objects/Program/Instructions/Base/ArraySet.php
@@ -0,0 +1,183 @@
+<?php
+
+    /** @noinspection PhpMissingFieldTypeInspection */
+
+    namespace RTEX\Objects\Program\Instructions\Base;
+
+    use RTEX\Abstracts\InstructionType;
+    use RTEX\Abstracts\RegexPatterns;
+    use RTEX\Classes\InstructionBuilder;
+    use RTEX\Classes\Utilities;
+    use RTEX\Classes\Validate;
+    use RTEX\Engine;
+    use RTEX\Exceptions\EvaluationException;
+    use RTEX\Exceptions\InstructionException;
+    use RTEX\Exceptions\Runtime\KeyException;
+    use RTEX\Exceptions\Runtime\TypeException;
+    use RTEX\Interfaces\InstructionInterface;
+
+    class ArraySet implements InstructionInterface
+    {
+        /**
+         * The array to read from
+         *
+         * @var mixed
+         */
+        private $Array;
+
+        /**
+         * The query to use to read from the array
+         *
+         * @var mixed
+         */
+        private $Key;
+
+        /**
+         * The value to set the key's value to
+         *
+         * @var mixed
+         */
+        private $Value;
+
+        /**
+         * The name of the variable to set
+         *
+         * @return string
+         */
+        public function getType(): string
+        {
+            return InstructionType::ArraySet;
+        }
+
+        /**
+         * @return mixed
+         * @noinspection PhpUnused
+         */
+        public function getArray(): mixed
+        {
+            return $this->Array;
+        }
+
+        /**
+         * @param mixed $variable
+         * @throws InstructionException
+         * @noinspection PhpMissingParamTypeInspection
+         */
+        public function setArray($variable): void
+        {
+            $this->Array = InstructionBuilder::fromRaw($variable);
+        }
+
+        /**
+         * @return mixed
+         * @noinspection PhpUnused
+         */
+        public function getKey(): mixed
+        {
+            return $this->Key;
+        }
+
+        /**
+         * @param mixed $value
+         * @throws InstructionException
+         * @noinspection PhpMissingParamTypeInspection
+         */
+        public function setKey($value): void
+        {
+            $this->Key = InstructionBuilder::fromRaw($value);
+        }
+
+        /**
+         * @return mixed
+         */
+        public function getValue(): mixed
+        {
+            return $this->Value;
+        }
+
+        /**
+         * @param mixed $Value
+         */
+        public function setValue(mixed $Value): void
+        {
+            $this->Value = $Value;
+        }
+
+        /**
+         * Returns an array representation of the object
+         *
+         * @return array
+         */
+        public function toArray(): array
+        {
+            return InstructionBuilder::toRaw(self::getType(), [
+                'array' => $this->Array,
+                'key' => $this->Key,
+                'value' => $this->Value
+            ]);
+        }
+
+        /**
+         * @param array $data
+         * @return InstructionInterface
+         * @throws InstructionException
+         */
+        public static function fromArray(array $data): InstructionInterface
+        {
+            $instruction = new self();
+            $instruction->setArray($data['array'] ?? null);
+            $instruction->setKey($data['key'] ?? null);
+            $instruction->setValue($data['value'] ?? null);
+
+            return $instruction;
+        }
+
+        /**
+         * @param Engine $engine
+         * @return array
+         * @throws EvaluationException
+         * @throws KeyException
+         * @throws TypeException
+         * @noinspection DuplicatedCode
+         */
+        public function eval(Engine $engine): array
+        {
+            $key = $engine->eval($this->Key);
+            $array = $engine->eval($this->Array);
+            $value = $engine->eval($this->Value);
+
+            if (!is_array($array))
+                throw new KeyException(sprintf('Cannot read from non-array value of type %s', Utilities::getType($array, true)));
+            if(!is_string($key) && !is_int($key))
+                throw new TypeException(sprintf('Cannot read from array with non-string value %s', Utilities::getType($key, true)));
+            if(!Validate::validateRegex($key, RegexPatterns::ArrayQuery))
+                throw new KeyException(sprintf('Cannot read from array with invalid query %s', $key));
+
+            $keys = explode('.', $key);
+            $result = &$array; // use a reference so we can modify the original array
+            foreach ($keys as $key)
+            {
+                if (!(is_array($result) && array_key_exists($key, $result)))
+                    throw new KeyException(sprintf('Key "%s" does not exist in array (%s)', $key, $value));
+
+                $result = &$result[$key];
+            }
+
+            $result = $value;
+            return $array;
+        }
+
+
+        /**
+         * @inheritDoc
+         */
+        public function __toString(): string
+        {
+            return sprintf(
+                self::getType() . ' %s[%s]=%s',
+                Utilities::entityToString($this->Array),
+                Utilities::entityToString($this->Key),
+                Utilities::entityToString($this->Value)
+            );
+        }
+    }
\ No newline at end of file
diff --git a/src/RTEX/Objects/Program/Instructions/GetVariable.php b/src/RTEX/Objects/Program/Instructions/Base/GetVariable.php
similarity index 88%
rename from src/RTEX/Objects/Program/Instructions/GetVariable.php
rename to src/RTEX/Objects/Program/Instructions/Base/GetVariable.php
index 0b958f6..e636404 100644
--- a/src/RTEX/Objects/Program/Instructions/GetVariable.php
+++ b/src/RTEX/Objects/Program/Instructions/Base/GetVariable.php
@@ -2,7 +2,7 @@
 
     /** @noinspection PhpMissingFieldTypeInspection */
 
-    namespace RTEX\Objects\Program\Instructions;
+    namespace RTEX\Objects\Program\Instructions\Base;
 
     use RTEX\Abstracts\InstructionType;
     use RTEX\Classes\InstructionBuilder;
@@ -67,14 +67,9 @@
             $variable = $engine->eval($this->VariableName);
 
             if(!is_string($variable))
-                throw new TypeException(sprintf('Expected string, got %s', Utilities::getType($variable)));
-
-            if (!$engine->getEnvironment()->variableExists($variable))
-                throw new NameException("Variable '$variable' is not defined");
+                throw new TypeException(sprintf('Expected string, got %s', Utilities::getType($variable, true)));
             
-            return $engine->getEnvironment()->getRuntimeVariable(
-                $engine->eval($this->VariableName)
-            );
+            return $engine->getEnvironment()->getRuntimeVariable($variable);
         }
 
         /**
@@ -110,7 +105,7 @@
         public function __toString(): string
         {
             return sprintf(
-                self::getType() . ' (name: %s)',
+                self::getType() . ' %s',
                 Utilities::entityToString($this->VariableName)
             );
         }
diff --git a/src/RTEX/Objects/Program/Instructions/Invoke.php b/src/RTEX/Objects/Program/Instructions/Base/Invoke.php
similarity index 80%
rename from src/RTEX/Objects/Program/Instructions/Invoke.php
rename to src/RTEX/Objects/Program/Instructions/Base/Invoke.php
index 35d98de..66ed201 100644
--- a/src/RTEX/Objects/Program/Instructions/Invoke.php
+++ b/src/RTEX/Objects/Program/Instructions/Base/Invoke.php
@@ -2,14 +2,16 @@
 
     /** @noinspection PhpMissingFieldTypeInspection */
 
-    namespace RTEX\Objects\Program\Instructions;
+    namespace RTEX\Objects\Program\Instructions\Base;
 
     use RTEX\Abstracts\InstructionType;
     use RTEX\Classes\InstructionBuilder;
     use RTEX\Classes\Utilities;
     use RTEX\Engine;
-    use RTEX\Exceptions\Core\MalformedInstructionException;
-    use RTEX\Exceptions\Core\UnsupportedVariableType;
+    use RTEX\Exceptions\EvaluationException;
+    use RTEX\Exceptions\InstructionException;
+    use RTEX\Exceptions\Runtime\ImportException;
+    use RTEX\Exceptions\Runtime\TypeException;
     use RTEX\Interfaces\InstructionInterface;
 
     class Invoke implements InstructionInterface
@@ -60,7 +62,6 @@
 
         /**
          * @return array
-         * @throws UnsupportedVariableType
          */
         public function toArray(): array
         {
@@ -68,7 +69,7 @@
                 'namespace' => $this->Namespace,
                 'method' => $this->Method,
                 'parameters' => $this->Parameters,
-                'fail_on_error' => $this->FailOnError,
+                'fail_on_error' => $this->FailOnError, // TODO: Implement this
             ]);
         }
 
@@ -77,8 +78,7 @@
          *
          * @param array $data
          * @return InstructionInterface
-         * @throws MalformedInstructionException
-         * @throws UnsupportedVariableType
+         * @throws InstructionException
          */
         public static function fromArray(array $data): InstructionInterface
         {
@@ -96,19 +96,24 @@
          *
          * @param Engine $engine
          * @return mixed
-         * @throws UnsupportedVariableType
-         * @noinspection PhpMissingReturnTypeInspection
+         * @throws EvaluationException
+         * @throws ImportException
+         * @throws TypeException
          */
-        public function eval(Engine $engine)
+        public function eval(Engine $engine): mixed
         {
+            $namespace = $engine->eval($this->Namespace);
+            $method = $engine->eval($this->Method);
             $parameters = [];
             foreach($this->Parameters as $key => $value)
                 $parameters[$key] = $engine->eval($value);
 
-            return $engine->callMethod(
-                $engine->eval($this->Namespace), $engine->eval($this->Method),
-                $parameters
-            );
+            if(!is_string($namespace))
+                throw new TypeException(sprintf('The namespace must be a string, %s given', Utilities::getType($namespace, true)));
+            if(!is_string($method))
+                throw new TypeException(sprintf('The method must be a string, %s given', Utilities::getType($method, true)));
+
+            return $engine->callMethod($namespace, $method, $parameters);
         }
 
         /**
@@ -156,8 +161,7 @@
 
         /**
          * @param array $Parameters
-         * @throws MalformedInstructionException
-         * @throws UnsupportedVariableType
+         * @throws InstructionException
          */
         public function setParameters(array $Parameters): void
         {
@@ -183,7 +187,6 @@
 
         /**
          * @inheritDoc
-         * @throws UnsupportedVariableType
          */
         public function __toString(): string
         {
diff --git a/src/RTEX/Objects/Program/Instructions/SetVariable.php b/src/RTEX/Objects/Program/Instructions/Base/SetVariable.php
similarity index 63%
rename from src/RTEX/Objects/Program/Instructions/SetVariable.php
rename to src/RTEX/Objects/Program/Instructions/Base/SetVariable.php
index 2f11f4b..cae9156 100644
--- a/src/RTEX/Objects/Program/Instructions/SetVariable.php
+++ b/src/RTEX/Objects/Program/Instructions/Base/SetVariable.php
@@ -2,14 +2,15 @@
 
     /** @noinspection PhpMissingFieldTypeInspection */
 
-    namespace RTEX\Objects\Program\Instructions;
+    namespace RTEX\Objects\Program\Instructions\Base;
 
     use RTEX\Abstracts\InstructionType;
     use RTEX\Classes\InstructionBuilder;
     use RTEX\Classes\Utilities;
     use RTEX\Engine;
-    use RTEX\Exceptions\Core\MalformedInstructionException;
-    use RTEX\Exceptions\Core\UnsupportedVariableType;
+    use RTEX\Exceptions\EvaluationException;
+    use RTEX\Exceptions\InstructionException;
+    use RTEX\Exceptions\Runtime\TypeException;
     use RTEX\Interfaces\InstructionInterface;
 
     class SetVariable implements InstructionInterface
@@ -19,7 +20,7 @@
          *
          * @var mixed
          */
-        private $Variable;
+        private $Name;
 
         /**
          * The value to set the variable to
@@ -38,41 +39,38 @@
             return InstructionType::SetVariable;
         }
 
-
         /**
          * @return mixed
-         * @noinspection PhpMissingReturnTypeInspection
+         
          * @noinspection PhpUnused
          */
-        public function getVariable()
+        public function getName(): mixed
         {
-            return $this->Variable;
+            return $this->Name;
         }
 
         /**
          * @param mixed $variable
-         * @throws UnsupportedVariableType
-         * @throws MalformedInstructionException
+         * @throws InstructionException
          * @noinspection PhpMissingParamTypeInspection
          */
-        public function setVariable($variable): void
+        public function setName($variable): void
         {
-            $this->Variable = InstructionBuilder::fromRaw($variable);
+            $this->Name = InstructionBuilder::fromRaw($variable);
         }
 
         /**
          * @return mixed
-         * @noinspection PhpMissingReturnTypeInspection
+         
          */
-        public function getValue()
+        public function getValue(): mixed
         {
             return $this->Value;
         }
 
         /**
          * @param mixed $value
-         * @throws MalformedInstructionException
-         * @throws UnsupportedVariableType
+         * @throws InstructionException
          * @noinspection PhpMissingParamTypeInspection
          */
         public function setValue($value): void
@@ -84,12 +82,11 @@
          * Returns an array representation of the object
          *
          * @return array
-         * @throws UnsupportedVariableType
          */
         public function toArray(): array
         {
             return InstructionBuilder::toRaw(self::getType(), [
-                'variable' => $this->Variable,
+                'name' => $this->Name,
                 'value' => $this->Value
             ]);
         }
@@ -97,13 +94,12 @@
         /**
          * @param array $data
          * @return InstructionInterface
-         * @throws MalformedInstructionException
-         * @throws UnsupportedVariableType
+         * @throws InstructionException
          */
         public static function fromArray(array $data): InstructionInterface
         {
             $instruction = new self();
-            $instruction->setVariable($data['variable'] ?? null);
+            $instruction->setName($data['name'] ?? null);
             $instruction->setValue($data['value'] ?? null);
 
             return $instruction;
@@ -112,25 +108,28 @@
         /**
          * @param Engine $engine
          * @return void
-         * @throws UnsupportedVariableType
+         * @throws EvaluationException
+         * @throws TypeException
          */
         public function eval(Engine $engine): void
         {
-            $engine->getEnvironment()->setRuntimeVariable(
-                $engine->eval($this->Variable),
-                $engine->eval($this->Value)
-            );
+            $name = $engine->eval($this->Name);
+            $value = $engine->eval($this->Value);
+
+            if(!is_string($name))
+                throw new TypeException(sprintf('Variable name must be a string, %s given', Utilities::getType($name, true)));
+
+            $engine->getEnvironment()->setRuntimeVariable($name, $value);
         }
 
         /**
          * @inheritDoc
-         * @throws UnsupportedVariableType
          */
         public function __toString(): string
         {
             return sprintf(
-                self::getType() . ' (variable: %s, value: %s)',
-                Utilities::entityToString($this->Variable),
+                self::getType() . ' %s VALUE %s',
+                Utilities::entityToString($this->Name),
                 Utilities::entityToString($this->Value)
             );
         }