Easy easy game. Get a bunch of Armor, and wait until you can find the lazer upgrade. On level one you can upgrade it to level 5 if you cram it in.
Just hide in a unoccupied corner and let your lil' lazer do the work. Use your shields when lots of fire comes your way and make sure the turrets are chasing you in a circular pattern.
You should be the entire game quickly enough.
If you have another method tell me. The game is really easy though so I hope there aren't too many ways, or I'll have to try em all.. haha
