Nice little game, I think you should have made it more obvious that you can't beat the wall (at least I assume you can't). I've played some other games during this jam that claimed to have this mechanic but were just using a square room and changing too much between "loops" that it didn't really feel like looping through the same level. But this achieved the feeling of going through the same level with a slight change every time.
You should cancel the momentum when you die, I kept on running into the spikes when I respawned.
Overall fun but too short. Well done!