Almost full marks. It's a compelling platformer, beautfully designed, responsive and deceptively simple.
The only detractor is that it's so bloody hard to control ones jetpacking skill, spikes everywhere.
This pulls from the casual games list, and becomes something that requires more effort than can be mustered in a coffee break.
Mind, you may not have designed as a casual game, or you may find it easy to control the rather erratic flight of our jet propelled robot chum - these things are subjective of course.
Some puzzling puzzles, rather than hair-trigger-responses-a-necessity wold be welcome.
Mind, that may be a whole different game altogether.
As it is, it's delicious, if nigh impossible for those of us with wibbly reflexes.