Lots of great feedback here! Tutorial was made before the main gameplay loop, and it's purpose is more to introduce the controls rather than the mechanics (slap being the exception). Crouch came free with the movement system, but no we did not incorporate into the gameplay because it didn't have a place. We bound it to C because Walmart-wan found out about Ctrl + W. I wanted to incorporate more movement as well into the gameplay but well, I had 50 more pressing tasks at the time. The reason the level isn't a flat plane is because beyond visual interest, I was hoping it would create more interesting movement in game. Hmm. I am just realising that the wall around the arena is a bad thing for that goal.
Edit: Pleased you like my art <3