I like the concept, but 2 things make this game not worth more than free, at least for now :
-no menu, impossible to pause the game, change key mappings, or get access to settings like sound.
-the controls are very clunky, especially the wall jump.
You need to be pressing left to wall jump to the right and vice-versa.
This goes against instinct : press left to go left
If all this was fixed, i would have enjoyed this game much more and maybe even finished it. As is, selling this would only bring bad rep, as many would probably feel a bit cheated that they paid for a worse platformer than some of the free ones out there.