Howdy, so I played on computer (fyi) and took down some notes. I hope they are useful.
- Text captions are a bit distracting to read while playing, if you can shorten them to images in world, it would be smoother (think Spelunky tutorial room)
- The final caption says jump through the green ring at the end (but it's gold)
- By level 2, I don't think you need any tutorialization, it actually seems out of place to me and I found it fairly easy to understand my goal
- When I hit the red enemy, I blinked, but I'm not sure it did anything, do I have health?
- I like that there's challenge gems and a reason to return to levels
- Jumping on top of the targets seemed to hurt me, but rolling into them didn't, that was confusing (I did recognize I needed to remove the bubbles, but even when the bubble was down I seem to be hurt by hopping on the target)
Best of luck on your progress, I'm curious to see where it goes.