For some reason I ABSOLUTELY LOVE THIS despite some frustrating ennemies that appear at the bottom of the screen!
Graphics are awesome, music is well chosen, I want more than one life !!!!!!
As a convention if you make a "die and retry" with situations that you should memorize (such as ennemies suprising you spawning from the bottom, or bottom left,right, you should do some kind a 'quick restart' with a number of lives, starting from the beginning with just 1 life is too painful.