This is a unique piece that looks like crap, but it's fun and VERY addictive.
The combat system is unique as there are dozens of real world firearms available yet most of the guns seem no better than any other. So it's all for a realistic effect. Also the guns are virtually useless IF you want to gain the most experience. Leaving enemies alive or knocking them out (hand to hand) grants more experience. So neutralizing the opposition with lethal weapons isn't worth doing so.
Once the player learns the game the weapons are mostly useless and hurt more than they help. Most of the gameplay is hiding and throwing rocks to lure an enemy into a hand to hand take down OR run by them to get their attention while running off to hide. Cat & Mouse.
Of course if you don't care about gaining the most experience you can just use the guns.
I don't know what it is, this game is buggy and it has a sloppy interface yet I can't stop playing it. It's just fun.