This is a pretty solid game! I love the graphics in this game. Although it's pretty simplistic, it stands out to me.
But there's only 2 things that don't feel too right, is the wall jumping mechanic, and a bit of level design. there are a few parts where it was really hard to jump over, and when wall jumping, I don't know how to fix this, but it adds an extra level of difficulty when you realize that you got to run into the wall, then jump.