What I loved is that you made a genuinely challenging but fair game, but you put the thought and care into making death feel quick, painless, and actually really juicy and fun, so I kept wanting to try again and again. Reminded me of super meat boy or nitrome, and felt way too polished to be a gamejam game. This is a game I might actually come back to and play to completion.
Dying never felt like, "Augh, it's busted, they made it too hard" but always, "oohhh, ok, let me try it this way" and that's NOT an easy thing to achieve in a game.
The foam mechanic is especially clever since it challenges you to get close to the thing that will kill you, but only gives you a snap moment to hover there. Genuine tension.