The mechanics of this game are not designed with complicated thought in mind but there's plenty of who can shoot faster.
For one thing the crouch mechanic is hard to use and shoot to the point of uselessness, the AI isn't to be compared with many other shooters on the market especially since simply hiding will save you from all fire and pursuit which just gets to easy if you pick your enemies off. The graphics are also not amazing, the animations of your enemies seem cartoony but and far to inorganic to drive you to kill. shooting and moving doesn't feel nearly as good as the marketers claim there is very little reaction to your shots that can be seen or at least in no differing way no matter what type of anything you shoot at it save for the rocket launcher. Also jumping and moving feels clunky and hard to control making getting shot especially irritating when you tried your absolute hardest but the controls fell short.
All that said you should know that if the visuals and the idea of shooting alien dudes that look like they do in this game and if you've liked halo games in the past you should absolutley get this game, but I can't recommend it to those who want a more visceral experience or those that want deeper skill in multiplayer.