The Minerva’s Den Add-on for BioShock 2 has 8 achievements.
Resolved all the Little Sisters in Minerva's Den
Destroyed all 10 Vacuum Bots in Minerva's Den
Killed a Lancer Big Daddy
Wrested control of the Thinker from Reed Wahl
Got 9999 points in one game of Spitfire
Escaped Minerva's Den
Reached Computer Core Access
Reached Rapture Central Computing Operations