Vertigo

Vertigo is a Predator A.R challenge map in Batman: Arkham Knight. It's located on a construction site on Founders' Island. Enemies consist of default Militia soldiers, two medics, one detective mode jammer and two soldiers wearing optically Camouflaged Suit. It's part of the Crimefighter Challenge Map Pack #3.

The default playable character is Robin.

Robin

 * Take out the enemy carrying the Detective Jammer last
 * Perform a corner takedown
 * Complete the challenge without being seen

Batman

 * Fear multi-takedown the optically camouflaged enemies
 * Environment takedown the detective mode jammer
 * Stop the medics from performing a single revive

Nightwing

 * Finish in under 2:00
 * Silent takedown the detective mode jammer from above
 * Stop the medics from performing a single revive

Catwoman

 * Bola, then ground takedown an optically camouflaged enemy
 * Take out a medic first
 * Stop the medics from performing a single revive

Azrael

 * Take out the optically camouflaged enemies first
 * Glide kick to ground takedown the detective mode jammer
 * Stop the medics from performing a single revive

Harley Quinn

 * Perform 5 cartwheels in a row
 * Perform a baseball bat beatdown
 * Stop the medics from performing a single revive

Batgirl

 * Explosive gel the optically camouflaged enemies
 * Batarang, then ground takedown the detective mode jammer
 * Stop the medics from performing a single revive

Red Hood

 * Silent takedown the optically camouflaged enemies
 * Perform a takedown from above
 * Stop the medics from performing a single revive

Trivia

 * In Story mode, there's a Militia watchtower located on the building.
 * The elevator that leads to the Militia's H.Q is located on the building, but it cannot be entered.
 * The first challenge in Knight where falling off causes the character to grapple back, as the grapple points would be too high from street level.
 * Red Hood and Harley Quinn can pull enemies off the building while hanging from certain ledges. This might not always work, however.
 * The billboards on the building might sometimes take the "Jokerized" appearance. As this happens with every character, this is presumably an oversight.