Shift: slow movement (but it isn't really useful in the finished game, haha)
Avoid crashing! Shoot the walls for points! Super fast cave action!
Vaguely inspired by the scoring strategy for the first stage of Zed Blade: http://dic.nicovideo.jp/v/sm549412
EDIT: Oops I fixed a bug. It was supposed to be giving points relative to the scrolling speed instead of the bullet speed, but I forgot to put global.speed instead of speed. <_> (It is floor(global.speed)*8 per scenery shot now. :awesome:)