It's a great, original, fun and playful concept. I really liked the gameplay, or at least the main idea, but I do have some critcism. It's never a good design idea to have death animations instead of just resuming the gameplay. Also, it gets too repetitive and hard too fast, the first levels are already a challenge to get through, and I honestly didn't feel like I was having fun anymore after a while.
The good sides do outweight the bad ones, and I think overall this is a good game and specially a great game concept. Keep creating, you're good at it!