Reason 'R' isn't red was because originally the colours were meant to represent elements, so Red = fire so I bound it to f. It was gonna be Earth, Fire, Water, Air but brown for earth didn't glow as much as the other colours so I made it yellow instead for electricity.
Also, the reason for that bug is I'm guessing I've misplaced the out of bounds trigger a bit on that wall there, projectiles can't walk through the walls but the player can, so I guess if u sit inside the wall ur kinda fine there. Players can go out of bounds but they will take dmg, I did this so you can't get corner trapped and feel cheated.
Thanks for the feedback though, very helpful!