The style is well executed, together with the theme being implement both visually and through story.
The indicator doesn't always seem to line up with where the bullet goes, which is sometimes a bit annoying.
And it is hard to figure out what the bullet does bounce of, and what it doesn't. Though the quick restart makes it a lot easier.
Well done, the puzzles and balance are interesting and the wacky setting is indeed wacky and fun.