I like it, because the game forces you to switch 'lanes'.
I've completed it one my first (ok, i'll be honest. Second time. I died the first time because I was curious what the red stuff did

) try.
I personally would think adding difficulty levels to the game might make it more fun to play. The current course is a bit to easy, seeing how you get a very long narrow hall before it ultimately closes. Maybe lower the size of the explosion per difficulty or make the 'walls' thicker.
Anyway, Great job. Hope you get nominated
