I loved the movement of the character, felt really free to move and jump, and the particles of fire was a sweet touch. The sound design is nice, if you die on the top of the TNT the sound doesn't conclude so we get the beggining of it, which sounds like the 'thud' of an explosion, and that is so satisfying.
And like Barribob said, starting to the level right away after dying would be a sweet touch! Nice game!