Very interesting concept! And the rainbow boots are so cute! I got to the ending of the game, here's my feedback:
- This is a very cool concept to play with, as a puzzle platformer. The movement and inconsistent visual feedback was sometimes frustrating, though.
- The "getting on top of enemies to reach platforms" thing was interesting as well, but it could be more tutorialized.
- Pressing numbers to reach platforms was really creative. I think a visual indicator of what number was last pressed (or is currently active) would be great.
- I think the game could be more zoomed out (or allow the player to lookaround) to avoid deaths where you couldn't possibly know what to do next. One example is the level where you fall on top of a "2" after passing a long "3" corridor. Other example would be the enemy that you have to freeze in order to reach the "4440" platform at the end of the level.
- Knocking your head under platforms should not kill you, I think, because it seems a bit unfair.
- There's a lot on the positive side, as well. I like that there's a very visual tutorial at the beginning of the game. It was very easy to understand what was happening and start playing.
- The animation of the enemies and the effect that happens when you jump on top of them is great. So is the design of the main character.
Also, it fits the limitation pretty well. Nice puzzle platformer, good job!