It's very good! I like the movement you have. It could be really great with a bit of polish.
The wall jumping feels good... but you can definitely exploit it. In the 2nd (?) level I just wall jumped all the way around the room, avoiding all obstacles.
I thought that having to press "Q" to see the real platforms was a bit of a needless distraction. But after a while I realized that the platforms which are or aren't real actually change when you die, which makes this mechanic pretty neat - every time you play the level, it is slightly different. I'd love if you leaned more in this direction.
There are a few visual bugs, though: a lot of shadows without bodies for no apparent reason.
I enjoyed it a lot. Congratulations!