Nice game!
I did notice that if I was touch a wall while in midair I got stuck until I let go if this was the intention don't listen to me lol
the way to fix this is really simple in unity make a 2d physics material and name it Slip or something and where it says friction 0.4 or something like that just turn friction to 0 and apply it to all the walls
Great Job on this game I can't wait to see what you make next