left arrow, right arrow, and space. (hold space for a long time for a high jump.) press "q" to activate a secret barrier. Just... dont press it when youre jumping in the spot where it activates. I made the costumes myself with a little inspiration from Minecraft. You can check the bar at the top left to see your sword durability. (basically how much you can use it) If you see a gap against the cube and the big wall when youre against it, try reloading your browser.