I was just waiting for him to come across a cactus-like alien! XD
Anyway, it's a good, solid platformer, with easy controls and simple gameplay (a nice change of pace), classic 8-bit style graphics and music, and a funny (albeit slightly disturbing) concept.
However, I have to say that the levels are a bit dry; no collectables, no powerups, no enemies or obstacles aside from the obligatory magma/toxic waste/spikes etc. But my biggest complaint is that the levels are awfully long to have to start all the way from the beginning if you die. Some kind of midway checkpoint or something similar would be much appreciated.
All in all, a decent game with some room for improvement.