This game isn't unordinary at all, gunless theme has been done lots of times before, and most enemies in shooters DO have weapons, otherwise they'd be too easy. 3/5
Split tail is my favorite upgrade in the game, if theres a sequel there should be and option or unlockable thing that makes your chain grow in 5 different places that alternate.
... This game is very boring and very primitive. I never had any fun with it because the enviroment is just too depressing. This is a bad excuse for a FPS