Most Wanted

The Most Wanted missions are side missions throughout all four of the Arkhamverse games. In Arkham Origins, Asylum and City, they are optional but all of the missions in Arkham Knight are required to get the 100% Knightfall Protocol ending. The most common is the Riddler in which Batman has to solve all of his riddles.

Arkham Origins

 * Enigma
 * Anarky
 * The Penguin
 * Deadshot
 * Mad Hatter
 * Bird
 * Shiva
 * Black Mask

Arkham Asylum

 * Riddler

Arkham City

 * Enigma Conundrum (Riddler)
 * Identity Theft
 * Shot In The Dark
 * Fragile Alliance
 * The Tea Party
 * Watcher In The Wings
 * Hot And Cold
 * Acts Of Violence
 * Cold Call Killer
 * Remote Hideaway
 * AR Training

Arkham Knight

 * Riddler's Revenge (Riddler)
 * The Perfect Crime (Professor Pyg)
 * The Line Of Duty (Chief Raymond Underhill)
 * Gotham On Fire (Firefly)
 * Gunrunner (Penguin)
 * Two-Face Bandit (Two-Face)
 * Heir To The Cowl (Azrael)
 * Creature Of The Night (Man-Bat)
 * Lamb To The Slaughter (Deacon Blackfire)
 * Friend In Need (Hush)
 * Occupy Gotham (Deathstroke)
 * Own The Roads (Deathstroke)
 * Armored And Dangerous (Deathstroke)
 * Campaign For Disarmament (Deathstroke)

The Season of Infamy

 * ??? (Ra's al Ghul)
 * ??? (Mad Hatter)
 * ??? (Killer Croc)
 * ??? (Prometheus)
 * ??? (Black Mask)
 * ??? (Mr. Freeze)

Gotham City Stories

 * TBA