Some nice visuals and cool story.
Takes awhile for the game to get started, which is a bit annoying since dying it very easy. Hitting the timing for the revive you basically have to know when you're going to die.
Having either some more checkpoints would be nice, since I wanted to specially fight the boss, or having a more difficult beginning so I didn't have to sit for while basically motionless shooting the same patterns.
The idea for a quick revive is cool, with enough reaction time. Could be expanded upon possibly, very cool game!