This was pretty fun! I like the concept of having to take damage in order to increase speed for obstacles. I didn't feel like the most levels were optimized around this concept, though. They were just like normal platformer levels that required precision jumping which became neigh impossible after you started building damage. Then the only option became "guess I'll die". This could lead to frustrating situations. The line been out-of-control, but fun and out-of-control, but frustrating is hard line to walk. To me, levels that were built around speed were fun. Levels built around precision were very frustrating.