Thank you! The code is really cursed and total mess, but at least it should be easy to compile, you only need cmake and some C++ compiler :P I compiled and tested only on linux, so if you have any issues you can write it and I'll try to help.
So after messing with C++ and the zig build system (don't ask) for an hour, I finally got it to work, tweaked the settings, and banked 1090 score. This is the best side quest I've ever done in my life.