A very good game! The level design was great and what i like most about it is how levels 1-6 is pretty much a tutorial about the different game mechanics like the switch, booster and the destroyable boxes.
The controls though reactive are still difficult to master due to the weight behind the ship, but even though its not an easy game (wich im glad it isn't), i still had no drive to use the skip level button since the game shows you very wel on what you died and the hit box of the ship is very clear.
All in all its a very good game , a little on the short side but surely worth someones time. Also props to the guy who made the soundtrack. It flows together very well. Keep on doing what you guys are doing :D.