It's an interesting concept and I really like the sound effects and the visuals. I don't understand what you have to do though... I read the instructions and found out that I could hit the player from below to cancel it's momentum and make him land on the spikes. Once he lands on the spikes he just jumps up and down forever. What am I doing wrong? Nonetheless it has good visuals and I'd like to continue playing this game once I understand how it works.