The artstyle was cute, and I really like the music of the boss fight (even tho he was hardcore, died 3-4 times). Controls were simple, no need to tell about them, they're the usual ones. Here are some things that could be improved:
-Enemies on top of pits where you can wall jump are tricky, I needed to leave the mouse to be able to do the wall jump, but at the top the enemies hit me before I could get the mouse back.
-There is room to add more things, a bigger story could lead to more planets, more planets to bigger game, etc.
Hope you enjoyed the jam and good job with your game!