I was kinda bummed. After level 33 when there weren't a buttload of lazers and cannons it became somewhat easy. Just time your fall/doublejumps right and you can float over the top of the last 6 levels. Great game though, I enjoyed seeing some rooms just plastered with my blood.
Was I the only one who started the game and hit the button instantly thinking something awesome was going to happen that was going to change the mechanics of the gameplay?