Dirty Earthlings

You are an alien that is in some trouble in the Dirty Earthlings shooter.  Your spaceship has run out of fuel and crash landed.  Now the human army is after you.  Don"t let them capture you.  You need to fight off the human army so that you can give your mother ship enough time to come in and rescue you.  You will need to defend your spaceship as the attack is coming from all sides.  Keep an eye on your radar to see where the army is coming from and be ready to defend yourself.