This is a very good game, interesting aesthetics, fun puzzles and cool mechanics all form a very cohesive game. I like that you added a definitive end, something most jam games don't do. Also I like that you try to provide an experience. It's not pretentious, it's commitment!
I'm giving it a 5 in nearly every category. My only problem was the spinning wheel to select your character. Even after realising you could stop the wheel, over half my runs were suiciding as quickly as possible so I could try with the character I really wanted. Additionally frustrating was missing a jump and then rolling the wrong character. In puzzle terms, the time between realising the solution to a puzzle and executing was way too high.
Overall, very good and I hope you continue working on it after the jam!