The Episode 24: Darkseid's War Factory / Harley's Heist Add-on for DC Universe Online has 2 achievements.
Locate the suitcases of stashed loot the Joker Goons left behind during Harley's Heist at the Regal Hotel
During the Darkseid's War Factory (Non-Elite) Raid, defeat Darkseid after group members have fallen to Darkseid's Omega Beams exactly thirteen times