I think RP gain should be based on distance (max achieved per rebirth). It would make it easier to balance without entangling it with how xp requirements increase per level gained. There should be a sweet spot where RP gains are maxed but your power doesn't allow you to push further without wasting time. Right now that sweet spot is just to die asap (because xp per level increases faster than RP per level). Not sure how exactly - rp quadratic per distance I think. Something like RP = K * MaxDist^2 (K = 0.1?). I'd be curious to see how that would feel.
Congrats on the game and on how reactive you've been with feedback.
Input keys lockup all the time (i.e. guy keeps going right until I press right or keeps jumping until I press jump. Other games don't have this problem.)
Great job on an initially original enough concept. I don't understand the ratings, people don't have a clue where recognition belongs. Looks like they prefer games where you just randomly toss things in the air and wait for luck to give you upgrades and a high score.