This is a pretty hard battle. Use the mouse to move (Your ship always points towards the mouse, click to move), and 'a' to shoot a light blue fusion blast, and then 's' to shoot a BATT (Ammo) depleting large fusion blast that has to charge before being fired. The Yehat Terminator is equipped with Twin Bolt Guns and a shield. You'll have to heavily wear down it's BATT before it stops using it's shields. You have few seconds to attack. Use your two types of projectiles to your advantage.
