Insanity and awesomeness...
As said by others this is a very instictive shoot and run type game.
The hardest part is getting past the initial attack from all sides.
I felt the engine power was a little bad though as other enemies seem to outrun me no matter how fast I buit it up.
The boss at the end was quite difficult and very hard to dodge.
Overall, a very challenging but very fun game. Keep up the good work.