Haven't played a good rage game in a while, haha. Loved it!
I'm curious though - is it intended that the background music comes from a specific location in the stage? Felt odd when I went far off to the right in the second stage and it became very distanced.
Also, I completely cheesed the third stage by immediately going left, then jumping on the wall and going allll the way across above the entire stage, hahaha
Good stuff either way - loved the effects and simple design!