its ok, VERY hard, has good potential
the game is possibly the hardest game I have EVER played
I thought it was impossible, I did get far but what made it hard wasn't the controls(at first I didn't understand the whole mouse aiming thing) but I dunno if it is just my computer but the frames skip and freeze when I shoot, that makes it frustrating plus the fact you have only 1 life and its almost impossible to keep your power level unless you are constantly picking up the blue dots,
and all the bullets onscreen (equivalent to gradius or R-type played on the hardest difficulty)
the game has GREAT potential though