A cool, retro, puzzle platformer! Nice!
I liked the retro inspired presentation- made the game feel really old school, and fit the gameplay really well. The levels sometimes took a second to figure out- that's what you want from the puzzle platformer, though :)
The idea, where you use your health as a resource is an interesting one. Most games treat loosing lives as a fail state, but here it was more "I need to get hit twice, but not more". Gave an extra layer to the puzzles! Nice!
There is only one thing that bothered me. I would much prefer, if the ball stayed in the bottom of the screen, and the loop moved. It was sometimes hard to judge where the jump will land, and that resulted in repeating the level multiple times.
Over all- that's a good jam game! Good work!