Here's a glithch: if you jump and create a clone while you are on a blue cube, there's the possiblity to clip your clone trough the bridge. When you jump again with the clone on the blue cube, the clipped clone will slam into the bottom of the stage, wathever it is, and not die even if there's a laser in the way. This allows to skip parts of a level or even break the game if you do this on a bottomless pit, because your clones don't die. Try it :)