This game was amazing. The art and animation were great, and the sound and music fit perfectly.
The idea is genius, I love how the longer you take in a level the harder it is to beat. The movement felt quick and responsive, the levels were well designed, not too short, and the difficulty curve was balanced. Having a difficult secret level and ending was also great and reminded me of older retro games (I actually reached the secret ending without the cheat :D)
I found zero bugs while playing the game, which is excellent. The only thing I feel like the game is missing is just a little bit more story elements. But other than that, I think the game is outstanding. Good luck in the jam!