Firesale

Firesale is a DLC predator challenge map that is included in the fifth pack of the Crime Fighter Challenge Maps in Batman: Arkham Knight. The enemies consist of normal Miltia soldiers, two medics, one Optically Camouflaged enemy and a Detective Mode Jammer. The challenge takes place on the Militia HQ, with two of the sections available.

The default character is Nightwing.

Nightwing

 * Save the optically camouflaged enemy until last
 * Do not use the grapnel gun
 * Destroy the sentry guns without being seen

Batman

 * Take Out the sentry guns first
 * Triple Fear Takedown the Jammer, Medic & Camouflaged Enemies
 * Sabotage a gun and cause it to backfire without being seen

Robin

 * Take out the sentry guns first
 * Take out 2 Enemies with an overloaded generator
 * Simultaneously Snap Flash the Jammer, Medic & Camouflaged Enemy

Catwoman

 * Take out the sentry guns first
 * Perform a Corner Takedown
 * Silently takedown the Optically Camouflaged Enemy

Azrael

 * Take out the sentry guns first
 * Take out the medics last and don't let them perform revives
 * Sabotage the Jammer's gun & make it backfire

Harley Quinn

 * Take out the sentry guns first
 * Perform an Environment Takedown
 * Take out 3 enemies in Mayhem Mode

Batgirl

 * Take out the sentry guns first
 * Take out 2 thugs with an overloaded escalator
 * Take out the Detective Mode Jammer in smoke

Red Hood

 * Take out the sentry guns first
 * Quickfire Shoot the Detective Mode Jammer
 * Perform a smash down takedown (Takedown from a Glass Ceiling)