o move with arrow keys or w, a, s, and d keys. o light up the green sensors. Everybody who thinks level 4 is impossible, Just look closely, you probably just got stuck on a wall, and I know the hitboxes are sometimes confusing, but try to move out of the way of any walls. Here's a tutorial if you don't know what to do: https://scratch.mit.edu/projects/734145552/ If you get stuck on a level, you can fit through smaller gaps by lowering your speed (if that does not work, try pressing a bunch of random arrow keys).
Thx to @ArtisticAdhrit
