This game is horrible! It's got very repetitive gameplay, very hard gameplay (you have one health the entire time) and the bosses are effin' impossible to kill!! I mean, sure they're easy in the first couple of levels but then they get ReALLY hard... like, impossibly hard. I only bought the game so I could unlock the Alien in Castle Crashers (made by same company, lot better game). You play as an alien that just crashed onto planet Earth and there's a bunch of FBI agents trying to kill you. I mean, how is that even realistic?? And why would the FBI even be interested in killing a poor "defenceless" alien who only wants to find a way to go back to his home planet? The only good thing about the game is it's weapons system.