Thanks a lot for playing and for the feedback! I agree, the limitation was something challenging to think of. I didn't want to be too unforgiving and giving the player only one life or health hahaha, so the one time power is what I came up with at the end.
I really like the game and art style :D Its just a bit annoying not being able to see what is ahead of you once you get enough speed. I got hit like 10 times without having time to react :(.