diff --git a/Game/Data/World.cpp b/Game/Data/World.cpp
index 689a333..0c57179 100644
--- a/Game/Data/World.cpp
+++ b/Game/Data/World.cpp
@@ -233,7 +233,7 @@ void RenderWorldEditorUI(World& world)
     if (ImGui::Begin("World Editor"))
     {
         TempArena   temp               = scratch_begin(nullptr, 0);
-        static char worldFilePath[256] = "../world.bin";
+        static char worldFilePath[256] = "/world.bin";
         ImGui::InputText("World File", worldFilePath, sizeof(worldFilePath));
 
         String path = GetAssetPath(temp.Arena, AssetType::JAsset, ConstString(worldFilePath));
diff --git a/Juliet/include/Core/HAL/Filesystem/Filesystem.h b/Juliet/include/Core/HAL/Filesystem/Filesystem.h
index c71f33b..445c38c 100644
--- a/Juliet/include/Core/HAL/Filesystem/Filesystem.h
+++ b/Juliet/include/Core/HAL/Filesystem/Filesystem.h
@@ -5,16 +5,19 @@
 enum class AssetType
 {
     JAsset,
-    Shader
+    Shader,
+    Config,
 };
 
 // Returns the path to the application directory
-extern JULIET_API String GetBasePath();
+JULIET_API String GetBasePath();
 
 // Path to the /Assets/ folder
-extern JULIET_API String GetAssetBasePath();
+JULIET_API String GetAssetBasePath();
 
 // Builds a full path to an asset file given its filename (e.g. "Triangle.vert.dxil").
-extern JULIET_API String GetAssetPath(NonNullPtr<Arena> arena, AssetType type, String filename);
+JULIET_API String GetAssetPath(NonNullPtr<Arena> arena, AssetType type, String filename);
 
-extern JULIET_API bool IsAbsolutePath(String path);
+JULIET_API bool IsAbsolutePath(String path);
+
+JULIET_API String CleanPath(NonNullPtr<Arena> arena, String path);
diff --git a/Juliet/include/Core/HAL/OS/OS.h b/Juliet/include/Core/HAL/OS/OS.h
index 6bc53a2..b0da8f8 100644
--- a/Juliet/include/Core/HAL/OS/OS.h
+++ b/Juliet/include/Core/HAL/OS/OS.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#include <Core/Common/NonNullPtr.h>
+#include <Core/Common/String.h>
+#include <Core/Memory/MemoryArena.h>
+
 namespace Memory
 {
     Byte* OS_Reserve(size_t size);
@@ -39,5 +43,10 @@ namespace Debug
     JULIET_API bool IsDebuggerPresent();
 } // namespace Debug
 
+String os_get_env_var(NonNullPtr<Arena> arena, const String& name);
+void   os_set_env_var(const String& name, const String& value);
+
+String os_get_username(NonNullPtr<Arena> arena);
+
 using EntryPointFunc = int (*)(int, wchar_t**);
 JULIET_API int Bootstrap(EntryPointFunc entryPointFunc, int argc, wchar_t** argv);
diff --git a/Juliet/include/Engine/user.h b/Juliet/include/Engine/user.h
new file mode 100644
index 0000000..e0944b6
--- /dev/null
+++ b/Juliet/include/Engine/user.h
@@ -0,0 +1,8 @@
+#pragma once
+
+using UserID = uint8;
+
+void initialize_user_system();
+void shutdown_user_system();
+
+uint8 get_local_user_id();
diff --git a/Juliet/src/Core/HAL/Filesystem/Filesystem.cpp b/Juliet/src/Core/HAL/Filesystem/Filesystem.cpp
index c84f216..dc1af03 100644
--- a/Juliet/src/Core/HAL/Filesystem/Filesystem.cpp
+++ b/Juliet/src/Core/HAL/Filesystem/Filesystem.cpp
@@ -7,6 +7,7 @@
 #include <Core/Logging/LogManager.h>
 #include <Core/Logging/LogTypes.h>
 #include <Core/Memory/Allocator.h>
+#include <Core/Thread/ThreadContext.h>
 
 namespace
 {
@@ -36,13 +37,14 @@ String GetAssetBasePath()
 
 String GetAssetPath(NonNullPtr<Arena> arena, AssetType type, String filename)
 {
+    Assert(IsValid(filename));
+
     String asset_path = {};
     switch (type)
     {
     case AssetType::Shader:
         {
             Assert(IsValid(CachedShaderBasePath));
-            Assert(IsValid(filename));
 
             size_t totalSize = CachedShaderBasePath.Size + filename.Size + 1;
             char*  buffer    = ArenaPushArray<char>(arena, totalSize);
@@ -52,9 +54,31 @@ String GetAssetPath(NonNullPtr<Arena> arena, AssetType type, String filename)
             asset_path = { buffer, totalSize - 1 };
         }
         break;
+    case AssetType::Config:
+        {
+            Assert(IsValid(CachedAssetBasePath));
+
+            constexpr const char* kConfig_str  = "config/";
+            constexpr size_t      kConfig_size = sizeof(kConfig_str) - 1;
+
+            size_t totalSize = CachedAssetBasePath.Size + kConfig_size + filename.Size + 1;
+            char*  buffer    = ArenaPushArray<char>(arena, totalSize);
+            Assert(buffer);
+
+            juliet_snprintf(buffer, totalSize, "%s%s%s", CStr(CachedAssetBasePath), kConfig_str, CStr(filename));
+            asset_path = { buffer, totalSize - 1 };
+        }
+        break;
     default:
         {
-            asset_path = GetAssetBasePath();
+            Assert(IsValid(CachedAssetBasePath));
+
+            size_t totalSize = CachedAssetBasePath.Size + filename.Size + 1;
+            char*  buffer    = ArenaPushArray<char>(arena, totalSize);
+            Assert(buffer);
+
+            juliet_snprintf(buffer, totalSize, "%s%s", CStr(CachedAssetBasePath), CStr(filename));
+            asset_path = { buffer, totalSize - 1 };
         }
         break;
     }
@@ -71,6 +95,11 @@ bool IsAbsolutePath(String path)
     return Platform::IsAbsolutePath(path);
 }
 
+String CleanPath(NonNullPtr<Arena> arena, String path)
+{
+    return Platform::CleanPath(arena, path);
+}
+
 void InitFilesystem(NonNullPtr<Arena> arena)
 {
     CachedBasePath = Platform::GetBasePath(arena);
@@ -90,13 +119,10 @@ void InitFilesystem(NonNullPtr<Arena> arena)
 
         if (DirectoryExists(probePath))
         {
-            size_t len = strlen(probePath);
-            if (char* buffer = ArenaPushArray<char>(arena, len + 1 JULIET_DEBUG_PARAM("CachedAssetBasePath")))
-            {
-                juliet_snprintf(buffer, len + 1, "%s", probePath);
-                CachedAssetBasePath = { buffer, len };
-                Log(LogLevel::Message, LogCategory::Core, "Asset base path: %s", buffer);
-            }
+            // Clean the path first to remove any relative parts
+            String abs_path     = CleanPath(arena, WrapString(probePath));
+            CachedAssetBasePath = abs_path;
+            Log(LogLevel::Message, LogCategory::Core, "Asset base path: %s", CStr(abs_path));
             break;
         }
     }
@@ -113,18 +139,13 @@ void InitFilesystem(NonNullPtr<Arena> arena)
 
         if (DirectoryExists(probePath))
         {
-            size_t len = strlen(probePath);
-            if (char* buffer = ArenaPushArray<char>(arena, len + 1 JULIET_DEBUG_PARAM("CachedShaderBasePath")))
-            {
-                juliet_snprintf(buffer, len + 1, "%s", probePath);
-                CachedShaderBasePath = { buffer, len };
-                Log(LogLevel::Message, LogCategory::Core, "Shader base path: %s", buffer);
-            }
-            return;
+            // Clean the path first to remove any relative parts
+            String abs_path      = CleanPath(arena, WrapString(probePath));
+            CachedShaderBasePath = abs_path;
+            Log(LogLevel::Message, LogCategory::Core, "Asset base path: %s", CStr(abs_path));
+            break;
         }
     }
-
-    Log(LogLevel::Error, LogCategory::Core, "Filesystem: Could not find Assets/compiled/ directory!");
 }
 
 void ShutdownFilesystem()
diff --git a/Juliet/src/Core/HAL/Filesystem/Filesystem_Platform.h b/Juliet/src/Core/HAL/Filesystem/Filesystem_Platform.h
index a5ccb47..1af6ada 100644
--- a/Juliet/src/Core/HAL/Filesystem/Filesystem_Platform.h
+++ b/Juliet/src/Core/HAL/Filesystem/Filesystem_Platform.h
@@ -2,6 +2,7 @@
 
 namespace Platform
 {
-    extern String GetBasePath(NonNullPtr<Arena> arena);
-    extern bool   IsAbsolutePath(String path);
+    String GetBasePath(NonNullPtr<Arena> arena);
+    bool   IsAbsolutePath(String path);
+    String CleanPath(NonNullPtr<Arena> arena, String path);
 } // namespace Platform
diff --git a/Juliet/src/Core/HAL/Filesystem/Win32/Win32Filesystem.cpp b/Juliet/src/Core/HAL/Filesystem/Win32/Win32Filesystem.cpp
index 8416103..72ec360 100644
--- a/Juliet/src/Core/HAL/Filesystem/Win32/Win32Filesystem.cpp
+++ b/Juliet/src/Core/HAL/Filesystem/Win32/Win32Filesystem.cpp
@@ -91,4 +91,17 @@ namespace Platform
 
         return false;
     }
+
+    String CleanPath(NonNullPtr<Arena> arena, String path)
+    {
+        char  clean_path_buffer[MAX_PATH];
+        LPSTR file_part = nullptr;
+        DWORD result    = GetFullPathNameA(CStr(path), MAX_PATH, clean_path_buffer, &file_part);
+        if (result == 0)
+        {
+            LogError(LogCategory::Core, "Failed to resolve path. Error: %lu\n", GetLastError());
+        }
+
+        return StringCopy(arena, WrapString(clean_path_buffer));
+    }
 } // namespace Platform
diff --git a/Juliet/src/Core/HAL/OS/OS.cpp b/Juliet/src/Core/HAL/OS/OS.cpp
index cbf2c42..f7c1573 100644
--- a/Juliet/src/Core/HAL/OS/OS.cpp
+++ b/Juliet/src/Core/HAL/OS/OS.cpp
@@ -1,6 +1,8 @@
 #include <Core/HAL/OS/OS.h>
 #include <Core/HAL/OS/OS_Private.h>
+#include <Core/Memory/MemoryArena.h>
 #include <Core/Thread/Thread.h>
+#include <Graphics/D3D12/D3D12Includes.h>
 
 namespace Memory
 {
@@ -58,9 +60,24 @@ namespace Debug
     }
 } // namespace Debug
 
+String os_get_env_var(NonNullPtr<Arena> arena, const String& name)
+{
+    String result = Internal::os_get_env_var(arena, name);
+    return result;
+}
+
+void os_set_env_var(const String& name, const String& value)
+{
+    Internal::os_set_env_var(name, value);
+}
+
+String os_get_username(NonNullPtr<Arena> arena)
+{
+    return Internal::os_get_username(arena);
+}
+
 int Bootstrap(EntryPointFunc entryPointFunc, int argc, wchar_t** argv)
 {
-
     int result = Internal::OS_Main(argc, argv);
     if (result == 0)
     {
@@ -73,4 +90,3 @@ int Bootstrap(EntryPointFunc entryPointFunc, int argc, wchar_t** argv)
 
     return result;
 }
-
diff --git a/Juliet/src/Core/HAL/OS/OS_Private.h b/Juliet/src/Core/HAL/OS/OS_Private.h
index a4f0586..37e785e 100644
--- a/Juliet/src/Core/HAL/OS/OS_Private.h
+++ b/Juliet/src/Core/HAL/OS/OS_Private.h
@@ -20,6 +20,11 @@ namespace Time::Internal
 
 namespace Internal
 {
+    String os_get_env_var(NonNullPtr<Arena> arena, const String& name);
+    void   os_set_env_var(const String& name, const String& value);
+
+    String os_get_username(NonNullPtr<Arena> arena);
+
     int  OS_Main(int argc, wchar_t** argv);
     void OS_Main_Exit();
 } // namespace Internal
diff --git a/Juliet/src/Core/HAL/OS/Win32/Win32OS.cpp b/Juliet/src/Core/HAL/OS/Win32/Win32OS.cpp
index ac2f916..655324e 100644
--- a/Juliet/src/Core/HAL/OS/Win32/Win32OS.cpp
+++ b/Juliet/src/Core/HAL/OS/Win32/Win32OS.cpp
@@ -100,6 +100,36 @@ namespace Internal
 {
     thread_local thread_context* mainThread = nullptr;
 
+    String os_get_env_var(NonNullPtr<Arena> arena, const String& name)
+    {
+        char   buffer[256];
+        String result = {};
+
+        if (GetEnvironmentVariableA(CStr(name), buffer, sizeof(buffer)) != 0)
+        {
+            result = StringCopy(arena, WrapString(buffer));
+        }
+
+        return result;
+    }
+
+    void os_set_env_var(const String& name, const String& value)
+    {
+        SetEnvironmentVariableA(CStr(name), CStr(value));
+    }
+
+    String os_get_username(NonNullPtr<Arena> arena)
+    {
+        char   username[256];
+        DWORD  usernameLength = sizeof(username);
+        String result         = {};
+        if (GetUserNameA(username, &usernameLength) && usernameLength > 1)
+        {
+            result = StringCopy(arena, { username, usernameLength });
+        }
+        return result;
+    }
+
     int OS_Main([[maybe_unused]] int argc, [[maybe_unused]] wchar_t** argv)
     {
         SetUnhandledExceptionFilter(&ExceptionFilter);
diff --git a/Juliet/src/Engine/Engine.cpp b/Juliet/src/Engine/Engine.cpp
index 4ef7756..de997df 100644
--- a/Juliet/src/Engine/Engine.cpp
+++ b/Juliet/src/Engine/Engine.cpp
@@ -7,6 +7,7 @@
 #include <Core/JulietInit.h>
 #include <Core/Logging/LogManager.h>
 #include <Core/Memory/MemoryArena.h>
+#include <Engine/user.h>
 #include <Graphics/DebugDisplay.h>
 #include <Graphics/Graphics.h>
 #include <Graphics/MeshRenderer.h>
@@ -159,6 +160,8 @@ void InitializeEngine(JulietInit_Flags flags)
 
     InitFilesystem(EngineInstance.PlatformArena);
 
+    initialize_user_system();
+
     JulietInit(flags);
 }
 
diff --git a/Juliet/src/Engine/user.cpp b/Juliet/src/Engine/user.cpp
new file mode 100644
index 0000000..ebace17
--- /dev/null
+++ b/Juliet/src/Engine/user.cpp
@@ -0,0 +1,48 @@
+#include <Engine/user.h>
+
+#include <Core/Common/CRC32.h>
+#include <Core/Common/serialization.h>
+#include <Core/HAL/Filesystem/Filesystem.h>
+#include <Core/HAL/IO/IOStream.h>
+#include <Core/HAL/OS/OS.h>
+#include <Core/Thread/ThreadContext.h>
+#include <Engine/Engine.h>
+
+void initialize_user_system()
+{
+    // Project needs a user.ini file with all users
+    // When starting if none exists -> create it
+    // User name is basically found in a env variable, if not, the local windows user will be used.
+    TempArena temp = scratch_begin(nullptr, 0);
+
+    String     user_system_path = GetAssetPath(temp.Arena, AssetType::Config, ConstString("users.ini"));
+    ByteBuffer user_file        = LoadFile(temp.Arena, user_system_path);
+
+    String username = os_get_username(temp.Arena);
+
+    if (user_file.Size == 0)
+    {
+        IOStream* stream = IOFromFile(temp.Arena, user_system_path, ConstString("w+"));
+        Archive   ar     = { .arena = temp.Arena, .loading = false, .stream = stream };
+
+        uint8 id = 1;
+        serialize(ar, username, crc32(username), id);
+
+        IOClose(stream);
+    }
+    else
+    {
+        ParsedArchive parsed_archive = tokenize_archive(temp.Arena, user_file);
+
+        Archive ar = { .arena = temp.Arena, .loading = true, .base = parsed_archive };
+    }
+
+    scratch_end(temp);
+}
+
+void shutdown_user_system() {}
+
+uint8 get_local_user_id()
+{
+    return 0u;
+}
diff --git a/Juliet/src/UnitTest/RunUnitTests.cpp b/Juliet/src/UnitTest/RunUnitTests.cpp
index 2eee895..1d501c1 100644
--- a/Juliet/src/UnitTest/RunUnitTests.cpp
+++ b/Juliet/src/UnitTest/RunUnitTests.cpp
@@ -11,11 +11,13 @@ namespace UnitTest
     void VectorUnitTest();
     void TestMemoryArena();
     void SerializationUnitTest();
+    void os_unit_test();
 
     void RunUnitTests()
     {
         LogMessage(LogCategory::Core, "Starting Unit Tests...");
 
+        os_unit_test();
         TestMemoryArena();
         VectorUnitTest();
         SerializationUnitTest();
diff --git a/Juliet/src/UnitTest/os_test.cpp b/Juliet/src/UnitTest/os_test.cpp
new file mode 100644
index 0000000..09654c8
--- /dev/null
+++ b/Juliet/src/UnitTest/os_test.cpp
@@ -0,0 +1,51 @@
+#if JULIET_DEBUG
+
+#include <Core/HAL/OS/OS.h>
+#include <Core/Logging/LogManager.h>
+#include <Core/Logging/LogTypes.h>
+#include <Core/Thread/ThreadContext.h>
+
+namespace UnitTest
+{
+    void os_unit_test()
+    {
+        LogMessage(LogCategory::Core, "=== Running OS Unit Tests (Juliet) ===");
+
+        TempArena scratch  = scratch_begin(nullptr, 0);
+        String    username = os_get_username(scratch.Arena);
+
+        Assert(IsValid(username));
+
+        String env = os_get_env_var(scratch.Arena, ConstString("JULIET_UNIT_TEST"));
+
+        os_set_env_var(ConstString("JULIET_UNIT_TEST"), username);
+
+        String env2 = os_get_env_var(scratch.Arena, ConstString("JULIET_UNIT_TEST"));
+
+        os_set_env_var(ConstString("JULIET_UNIT_TEST"), env);
+
+        Assert(StringCompare(env, env2) != 0);
+
+        // String os_get_env_var(NonNullPtr<Arena> arena, const String& name)
+        // {
+        //     String result = Internal::os_get_env_var(arena, name);
+        //     return result;
+        // }
+        //
+        // void os_set_env_var(const String& name, const String& value)
+        // {
+        //     Internal::os_set_env_var(name, value);
+        // }
+        //
+        // String os_get_username(NonNullPtr<Arena> arena)
+        // {
+        //     Internal::os_get_username(arena);
+        // }
+        //
+
+        scratch_end(scratch);
+        LogMessage(LogCategory::Core, "=== All OS Unit Tests Passed Successfully ===");
+    }
+} // namespace UnitTest
+
+#endif
diff --git a/misc/build.bat b/misc/build.bat
index 4cf4ac4..71ffe50 100644
--- a/misc/build.bat
+++ b/misc/build.bat
@@ -175,7 +175,7 @@ if /i "!CFG!"=="Debug" (
     set IMGUI_UNITY_SRCS=
 )
 
-set COMMON_LIBS=kernel32.lib user32.lib gdi32.lib dxguid.lib Ws2_32.lib dxgi.lib imm32.lib dwmapi.lib d3dcompiler.lib dxcompiler.lib shell32.lib winhttp.lib delayimp.lib
+set COMMON_LIBS=kernel32.lib user32.lib Advapi32.lib gdi32.lib dxguid.lib Ws2_32.lib dxgi.lib imm32.lib dwmapi.lib d3dcompiler.lib dxcompiler.lib shell32.lib winhttp.lib delayimp.lib
 
 if defined IMGUI_UNITY_SRCS (
     echo STEP Compiling ImGui Shared Objs [!CFG!]>>"!PLAN_FILE!"