This is mostly unchanged original leaked Far Cry source tree. Some modifications were made to original sources and project configuration in order to make it able to be built using Visual Studio 2022 for x64 v143 target.
This repository has 2 branches:

• leak - contains the original leaked source with project files overwritten by AMD64_ProjectFiles_VS2005 contents
• win32_x64 (default) - check out this branch if you want to build from sources using Visual Studio 2022

Bundled DirectX SDK was removed, so in order to build from sources you need to install DirectX 9 SDK from Microsoft.
Just load Game01.sln, select Release64 solution configuration and run Build solution. 20 out of 22 project will compile and link, only 2 will fail (XRenderOGL and Editor), you can unload them for the present if you wish.

X64 build was tested using assets from the latest Steam version of the game patched with 64-bit Upgrade Patch from PC Gaming Wiki. Saves work fine, game still has some unhandled exceptions on shutdown only noticeable during debugging.

1. Create some directory alongside Bin32 or Bin64 directories, for example CustomBuild
2. Place compiled binaries from FarCry/x64/Release64/ folder (16 DLLs ans 3 EXEs in total)
3. You still need to copy the following 5 DLLs from Bin64 folder: DivxDecoder.dll, DivxMediaLib.dll, FileParser.dll, msvcr71.dll, crysound64.dll
4. You can optionally copy some *.pdb files to aid debugging

The resultant file tree should look something like this:

CustomBuild
├── Cry3DEngine.dll
├── CryAISystem.dll
├── CryAnimation.dll
├── CryEntitySystem.dll
├── CryFont.dll
├── CryGame.dll
├── CryInput.dll
├── CryMovie.dll
├── CryNetwork.dll
├── CryPhysics.dll
├── CryScriptSystem.dll
├── CrySoundSystem.dll
├── CrySystem.dll
├── DivxDecoder.dll
├── DivxMediaLib.dll
├── FarCry.exe
├── FarCry_WinSV.exe
├── FileParser.dll
├── ResourceCompilerPC64.dll
├── XRenderD3D9.dll
├── XRenderNULL.dll
├── crysound64.dll
├── msvcr71.dll
└── rc64.exe

Editor builds fine but linking stage still fails due to it still dependent on closed source proprietory XTreme Toolkit for MFC