I liked the fact that you can "de-volve" and reuse the points to better suit the challenge ahead! Also, the fact that you are not harshly punished for mistakes is really good since it makes the player want to experiment more.
The music and sound effects were really nice and added a lot to the game, reminds me of flash games from back in the day.
My biggest gripe would sadly be that the controls are not as tight as they could be. The jumping is barely noticeably delayed which makes tight jumps really frustrating.
Also the game softlocks if you press E to open the evolution menu, and then hit esc. At least for me but maybe I did something wrong lol.
The game was fun and has a lot of potential, the potential is still untapped though. But I did enjoy it!