Essentially unplayable.
This has one of the most common flaws in flashes from people new to making them: It's difficult for all the wrong reasons.
The graphics look more like place-holders than finished products. I know you're not exactly skilled in Flash just yet, but would it have really been so much effort to actually try to draw a spaceship, instead of just putting a random pentagon over a gradient dot? The whole intro thing goes on about piloting a spaceship through space, and yet there's absolutely nothing space-related anywhere on the screen. Why not?
And the graphics are the least of this flash's problems. The gravity physics seem a little on the weak side, and there doesn't appear to be a maximum speed the "spaceship" can go, making it all too easy to lose control of it. A fact not helped by the way the ship spirals around a point outside of it when moving from side to side. Making it spin may have been a good idea for an animation effect, but since the pivot point isn't in the right place the ship travels in an unpredictable S-bend pattern instead of a straight line (and given the precise nature of a maze game, this is hardly welcome).
But the biggest problem this has, by a LONG way, are the hit areas. ALL of the hit areas are so completely inaccurate that you're basically flying blind, which in a maze game like this makes beating it entirely down to blind luck, not skill. Sometimes the 'spaceship' can go completely over the lines without anything happening; other times the game restarts when you're not even near them. With a game that has a gravity aspect, and a time limit, having to stop and work out where you -really- are at every corner completely kills both the fun and the point (especially when it turns out the wall's hit area is in the wrong place too).
I'm struggling to think of any good reason why you'd submit this in the state it's in. The only things that actually work properly are the scrolling effect and the music (which was actually pretty good: neither annoying or over-bearing like what you get in most flashes like this), as well as the buttons. And those are the only reason why this isn't getting a zero.
That said, I do like the fact that you haven't just gone for the same old mouse pointer maze game everyone else does, and I would actually like to see you try this again, but it needs some serious work before it should be submitted a second time, IMO. No-one's going to hate you for making a challenging game, but there's a big difference between 'challenging' and 'half-broken'.