Cool game. The mechanics are simple but also pretty fun. I like the ability to dive down after jumping - it gives you a lot of control over your height. There's a nice variety of obstacles too. I'm not sure if there's something I'm missing, but it seems impossible to avoid the helicopter's missile. It would always catch up with me eventually no matter what.
The graphics are nice. I like the consistent use of reds, yellows and purples. The lighting effects are cool, but could be toned down little. Some of my deaths were less because I made a mistake and more because I couldn't see what was happening.