I really love this game. It's imaginative, fun and challenging in all the right places. Yes. some of the levels are a little hard - but they aren't impossible and it just makes you strive to do better.
There used to be a couple of games about 10 years ago called Freespace and Tachyon - kind of remind me of those. I particularly like the level designs where you give different objectives and scenarios than just blowing things up - navigating through radiation, lighting up an unidentified craft, etc, etc. I would have liked some hittests around some of the objects though - like the space station and asteroids, so that you had to avoid them and not just be able to fly straight through them.
Okay the only reason why I'm giving this an 8 and not a 10 (because in my opinion it deserves a 10 and then some; I don't get why people are giving it such low scores) is that on the mission where you have to navigate through hyperspace, when I entered the exit portal, it lead me into a large clump of dark matter, giving my HP -4. The next level, I start on -4 HP with seemingly no way to reset back to the previous level. Hence, I'm stuck with my ship spawning in on -4 HP and blowing up. The Menu button in that screen also doesn't appear to work, so I have no choice but to start the whole game again - which is very annoying!
Other than that, a great game - and I love all the customisation and little extras you have added to it - such as the ship lights or the way the mission screen and HUD open and close; that is very cool. All in all, a very imaginative game with just one or two bugs!