Would like to see what's beyond Level 2... Kept getting plenty of red platforms at the start. Certainly a lot of kinks to work out my personal best is always 0.00.00 :( Not sure if you intended to replay the audio every time a person retries a stage but it can end up sounding a bit monotonous if you're continually respawning. I found that the jumping mechanic was more useful that the explosives. Perhaps if they were on a 1 second timer so the players could maybe save themselves in mid-air with another explosion instead of a mid-air jump that would add more explosions and increase the gameplay mechanics. 
You could also add more explosive elements to the environment, like those red platforms could explode.
Health.... I don't know how you lose it. You just die. And I can't tell if you gain health when you land on a blue platform as I don't lose health when I blow myself up.
I get can certainly see a "Super Monkey-ball"-ish vision to this project. Keep working on it. I would like to see a more polished version.