Just pushed a mini-update with resolution options. I must warn though, the lower resolutions look really weird.
Yeah, that was semi-intentional. I didn't want to limit the amount of wall jumps the player had, so I let that stay.
What I might do is slightly reduce the time window you have to press space whenever you hit the wall on consecutive jumps, so it becomes harder (but not impossible) to achieve this, but we'll see. What do you think of this idea?