Use Space to go up and press the right arrow to change costume. Yes, it is pretty simple. The skins must be typed in correctly. The skins are: 1) standard 2) upgrade 3) fade 4) pinpoint 5) christmas 6) bullet 7) noob 8) arrow
NEW: Levels (kind of) made! Home Screen here too, level select VERY basic at the moment, but I will change that. COMING SOON: A proper Character Select. This is one of my secret projects I've been working on and everything is from scratch. No copy-and-pasting, just something I made. Leave a comment if you want more skins or levels!