I went full x25 the whole time. And I think it breaks the game XD the score goes unreadable, the music starts to lag, and most importantly, your bullets don't hit people if they are not spaced properly. I don't know why that is, but it looks like they are blinking instead of sliding across the screen. So if the enemy happens to be inbetween the blinks (and they go real fast on 25) then they wont kill the enemy. Was fun, well done.