Yea, I probably should've played the full game before commenting, but I do think it’s a bit unclear. Great game tho.
Idk if this is a bug(probably is), but on this level, you can't clear it when you have both the boxes like you usually have to, but only when you have one of them.
you can't clear it when you have both the boxes like you usually have to, but only when you have one of them.