The Arena, which is a post-apocalyptic version of the survival mode, will be available for everyone after finishing the story mode
Nicolas Games has announced that Dirty Arena, a free DLC for Afterfall InSanity, will be launched via Steam as a game update that will also include previously announced achievements and Cloud integration. With Dirty Arena, the player has to survive waves of enemies, complete stages of the arena and perform special tasks which will be awarded with achievements. The new mode will consist of encounters divided into smaller waves and mini-boss fights.
Additionally, DLC will contain tougher challenges in the form of Boss fights. Between the battles players will be able to purchase weapons and ammunition using currency they earned on the Arena.