The Season of Infamy: Most Wanted Expansion Add-on for Batman: Arkham Knight has 12 achievements worth 160 gamerscore.
Follow the assassin's trail.
Discover the Lazarus pit.
End the League of Assassins' war.
Rescue Mad Hatter's first hostage.
Rescue Mad Hatter's second hostage.
Lock up Mad Hatter in GCPD.
Interrogate the Militia Lieutenant.
Track down the cryopod.
Survive the Militia onslaught.
Defeat the prisoners.
Gain access to the high security area.
Lockup Killer Croc in GCPD.