The Tiny Tina’s Assault on Dragon Keep Add-on for Borderlands 2 (Xbox 360) has 10 achievements worth 250 gamerscore.
Complete thy quest by rescuing yonder queen
Feed thy noble queen 3 times during one visit to her quarters
Show thine worst enemy, the abomination known as "The Darkness," who is the nerdiest of them all
Demonstrate your skill, or lack thereof, at rolling the magical treasure orb of many sides
Unsheath 5 swords from Immortal Skeletaurs without leaving the area
Introduce thyself to the White Knight
Slay Mister Boney Pants Guy
Win the most challenging round in Murderlin's Temple
Wield the Mysterious Amulet
Vanquish the Ancient Dragons of Destruction