Alas, there is a little bug in the game: when you buy the +50 speed card, the bullets will sometimes go through some of the smaller ships -.- that's not good since a) you want more points and b) they can still fire at you... no good! also, on the first two levels, enemies will sometimes drop life or shield powerups as well as weapon powerups. on later levels, there are ONLY weapon powerups. don't know if it's supposed to be like this - perhaps the developer thought, with the adrenaline powers and the fast refill of the bar you get on later levels it isn't necessary to throw in those powerups any more - but anyways, it sucks, since you sometimes have to go for the red shield just to replenish energy. The auto-repair card is helpful, but you want to use that slot for something else to do more damage or something. Still, VERY GOOD game! 5/5 lol I copied LordDeathWing