Pretty decent but simple improvements would make it better. Make the background change as you level up or something. Also, 3 weapons isn't enough. 10 would be better. Maybe grenades, mines or things like that. Finally, everyone is asking for medi-kits but I don't think they are needed as your health re-fills every time you level up.
Visuals are wonderful but the controls are a bit too sebsitive. You constantly need to let go of Accelerate. I want realistic games but this is annoying. Also, I shouldn't need to start over when I crash. Still pretty decent though.
Belugerin's games really are the marmite of the flash games world. There are some trully amazing games made by this guy(s)/girl(s) but there are a lot that seem rushed or not finished. The artwork is always up to scratch however.