Really good but I don't generally like in games like this where you get some powerups that are clearly explained and others (in this case the mechs) that come halfway thru the game and aren't. you spend so much time trying to be as good as possible at the early stages with the basic weapons and then instead of applying the mastery you accumulate to the later ones it's sometimes better to just transform and hold everything with the drill for example, and thats assuming you even realize the drill can do that... however, the drill is cool