you can quit from the fight itself pressing “Q� key when paused
Phantom Shield now grants only a bonus of half-damage from shots (not full immunity as before) to better balance the game
added survivor battle mode, you'll be in control of the mothership and you'll have to survive as long as possible! After you destroy an opponent, a new one will appear after 10 seconds. In this short time you'll be able to pickup a repair bonus to restore some of the ship lost hitpoints.