Destruction Line is a Combat AR Challenge in Batman:Arkham Knight. It takes place inside an elevator in Riddler's Robot factory, and is unlocked after completing Catwoman's Revenge Arkham Episode.
The default character is Catwoman.
- 1st round is trap-free.
- 2nd round activates the electric fences that surrond the arena. Any enemy who touches this wall will be knocked out.
- 3rd round activates lasers, which come from the ceiling and travel around the arena. Enemies are not affected by this trap, but the player is.
- 4th round doesn't introduce any new traps, but all previous traps are still on effect.
- The electric floor from the Arkham Episode is never activated, presumably due to the immense difficulty it would create.