This game is so AWESOME cause you get to play this and once you play it you might like it but for some people... nah some people might not like it cause maybe they lost but the rounds are so AWESOME cause sometimes once you kill one of those things that try and kill you sometimes they might even drop an upgrade and there is also these little things ,but, about the uprade yeah, once you get to it the upgrade will make you get +1 shot and I mean the things that shoot the enemies and... that's it