I can't get it to load in FistAlpha either.
If you load VC and use Custom Game, it doesn't work.
If you edit the Loader.ini or try to use a shortcut, it doesn't work.
I've edited the third line in Loader.ini 4 different ways:
CommandLine=addon fistalpha
CommandLine=-addon fistalpha
CommandLine=fistalpha
CommandLine=-fistalpha
None of the above work (it should be the second one). Also setting Target= to a working FistAlpha shortcut doesn't work because it resets to Target=vietcong.exe and loads original Vietcong.
If anyone can get the Loader to load FistAlpha, please tell me how, I'm assuming VcHook works in FistAlpha, its just not possible to load into it yet (because the CommandLine doesn't work). Another Loader might work, if someone can link to one that works.
My suggestion for now, is to play in original Vietcong mode - you don't lose much, and VcHook is way cooler. Now I'm going to try and get VcHook undetectable to Hradba by the debugging method mentioned, which looks complicated to a non-debugger.