The Season of Infamy: Most Wanted Expansion Add-on for Batman: Arkham Knight has 12 achievements.
Lockup Killer Croc in GCPD.
Gain access to the high security area.
Defeat the prisoners.
Rescue Mad Hatter's second hostage.
Discover the Lazarus pit.
Follow the assassin's trail.
Rescue Mad Hatter's first hostage.
End the League of Assassins' war.
Lock up Mad Hatter in GCPD.
Interrogate the Militia Lieutenant.
Track down the cryopod.
Survive the Militia onslaught.