You and your ship are the only hope for human existence. Fly through enemy lines and do as much damage as you can. The alien fleet will come thicker and faster once they see you, so make sure you use those power ups.
Play a fantastic space arcade fighter game. You will be first battling basic alien ships and if you survive faster and larger ones will come at you. Beware these have incredible capabilities and deadly fire rates. Make sure you collect as much repair kits and power ups as you can.