Great game! The animations looked really good, I especially liked the pink cape moving and expanding while in the air. I also liked how screen transitions worked as checkpoints, that was a nice touch. The cake slowing down the player was a nice effect and I actually tried something similar in my game with the "Boots of Less-is-more"
The only problem I encountered was the character getting stuck in a block I jumped into from an odd side angle (see screenshot). I was completely stuck and couldn't move on so I had to restart the game, only to come back and realize I was on the last screen when the glitch happened. It gave me a good laugh and I won't hold it against you in any way! Also the development console was always active in my game.
Regardless, fun game and I really enjoyed it!