Batman: Arkham Strike Back

Batman: Arkham Strikes Back is a sequel to Batman: Arkham Returns.

Plot
The plot takes place ten years after Batman: Arkham Returns. Levels of crime are increasing. Bruce Wayne becomes Batman and saves Carrie Kelly from a Mutant gang. He defeats the Mutant Leader. Several Mutants rename themselves the Sons of the Batman.

The return of Batman stimulates the return of Harley Quinn, now calling herself the Joker.

Two Face
Two Face's face has been repaired. He is now wearing bandages and planning to bomb the city.

Characters

 * Batman/Bruce Wayne
 * Robin/Carrie Kelly
 * Joker/Harley Quinn
 * Mutant Leader
 * James Gordon
 * Two Face/Harvey Dent