I found this to be quite bad. The worst thing was probably how you just had to keep on pressing things. The gameplay didn't make much sense. I guess it was somewhat unique. The music wasn't bad. I have no idea how to get the key.
It just wasn't a rewarding game at all. I wish you could at least pause it. It was too easy to die. My medal for that didn't even show up! On top of that, the graphics were not good at all and looked way too cheap.