Nice shooting game. I like the direction it's going. Here are my points of review:
Concept: I like the idea of having an area to heal after taking damage. It would be cool to have new areas to heal as you move around.
Controls: I understand that it's a mouse input only entry, but the shooting direction only go the same directing the ship is facing makes it very difficult to hit targets while staying alive. Movement felt great though.
Presentation: Game looks good. I think there were some issues with positioning of layers, as it seems only a quarter of the play area was covered by atmosphere. I did enjoy the direction indicators for where the enemies are, the fiery explosion animations and the parallax.