Ummmmmmmmmmmm.
That's all I got for ya.
Really, there is room for improvemeant, but it is a start.
A few tips:
1. Use better-more realistic entity placemeant. This is difficult in a scifi game, but having an unrealistic pile of junk on a bridge is not - well- realistic. Simply put, use better entity placemeant.
2. The level design is fine, but use more complex geometry for a visualy interesting journey. Remember, the scenery is almost more importany than the gameplay.
3. The lightaps are decent, but you could use more realistic colors in the scenes. A transition from the red lava to the green lights in the last screen make me feel like I am walking through a rainbow. Think of what lights really look like, and pick a color that suits your mood.
Over all, good work, but there is always need for improvemeant.
EDIT: oh, get that stupid code snippet out of here, it is just wasting space. LOL
I can also make good logos.