I really like that music track. The level seems like it's off to a good start. There's definitely potential in using the Chasing Rexes mixed with slippery physics so I think you should build on that idea. It's too early to see where you're going to take the Rocket Boots but good luck with it. The only major thing I could mention right now is that the On/Off Blocks and One-Way Blocks don't really make much sense. There's no real reason for the floor to be On/Off blocks there when the switch is literally right next to them, and there's not really much reason to restrict the player and stop them from going backwards. Think about those things, and see if you can use them better.