Great idea! I think it's also well executed! I do want to note a few things though. That noise it makes when you die is annoying. Also since this game is played with the keyboard, when I die, I would want to be able to restart the level without having to touch the mouse. Perhaps using the exact same buttons I was using during the game play. I don't think there was a way to do that. Also, I don't like it when the characters spawn a bit too close to red squares. Often, I'm pressing buttons from the last level; and in the next level, I'm suddenly dead!
But still, credit where credit is due, this game is good! The idea is cool, the puzzles are challenging, and overall it's a well built game! This game may even enter top 20! I would love to see a fully completed version of this game after the jam!