Far Cry 2 is STALKER gone incredibly wrong.
I don't mind bug. The game was just bad. Bad weapon feedback, bad pacing, bad AI, bulletsponge enemies, absolute lack of variety and an underused, empty landscape.
It had a nice engine and good looking scenario and that's pretty much it.
Do you actually want a buggy, half-baked and yet incredibly ambitious open world shooter/RPG/whatever? Then just play White Gold/Precursors.
One tenth of the budget, with a ten times more coherent creative vision.