This game is very well made. The game concept fits perfectly with the jams topic.
It is very difficult to implement a wall jump, on the one hand you have to make sure that the player understands it well and on the other hand the controls have to feel good. But you implemented it perfectly. Great job!
As others have said, jumping feels a bit weird, i second that.
The art is very simple, but it looks nice.
Altogether, this is a good game, with great mechanics and with simple but good looking visuals.