Lots to say about this one :-)
The presentation is great, nice clean graphics, artwork for the intro is fantastic and comical, a very nice touch.
The introductory gameplay / tutorial section is integrated beautifully into the first level. A 'learn as you play' approach which I love. It also doesn't feel 'shouty' when you replay the game, the first level is still a normal level, just with some extra text prompts.
The addition of the compass and zoomed out mode are nice. I found that once I zoomed out, I just stayed zoomed out as it makes the combat easier. If I could make a recommendation it would be to have the zoomed out mode be default when travelling outside of combat, then have it zoom in once you engage an enemy (a change in music could assist in this transition). This might add an element of tension to the battles.
I may not have played far enough, but are there upgrades to your ship at all? Extra health, weapon modifications etc? If not, I think this would go along way to improve the enjoyability of the gameplay. I also felt the red ships could have been made more different to the yellow ships as far as combat goes. It seems like they have double the health, but they still move at the same speed and engage the player the same way. I can see from the screenshot that there are blue ships as well and they appear to have different weaponry... I just feel the red ships could do with a slight upgrade :-)
I didn't hear any music or soundFX, this would make a big impact in overall impression...
Overall a great little game :-)