The Tatooine Mission Pack Add-on for Star Wars: The Force Unleashed has 5 achievements worth 125 gamerscore.
Defeat Boba Fett
Meet Jabba and defeat his pet using the pit gate
Defeat Obi-Wan, before and after he becomes more powerful than you can possibly imagine
Use the hot irons three times on the Gonk Power Droid
Crush 5 Jawas by using the grinder in the Garbage Processing Room