Clunky controls, terrible spawns, only one gamemode, unattractive menu system and a terrible tutorial.
AI is shitty at best and there are bugs. Ex: Character doesn't actually aim at the pointer/laser but under it, a terrible way to compensate for recoil.
Also, don't leave info about how to fix the choppy fps in the last paragraph of your description. Info like that should be made clear when people start the game.
Overall a poorly executed/unpolished game that was poorly thought out. The only redeeming quality is the graphics which aren't that impressive - go play a 3d fps instead of this.