Unlock Anakin's Starfighter:
     Beat the Anakin Bot in Multiplayer mode.

Unlock Darth Vader's Tie Fighter:
     Defeat Darth Vader Bot in Multiplayer mode.

Unlock General Grevious's Starfighter:
     Beat General Grevious Bot in Multiplayer mode.

Unlock Master difficulty for Anakin:
     Beat Obi on any difficulty.

Unlock Master difficulty for Obi-wan:
     Beat Anakin on any difficulty.

Unlock Millenium Falcon:
     Beat the Solo Bot in Multiplayer mode.

Unlock Slave I:
     Defeat Fett Bot in Multiplayer mode.

Unlock X-Wing:
     Beat the Luke Bot in Multiplayer mode.