Top of the World

Top of the World is a Challenge Map in Batman: Arkham City. This map takes place in the Wonder Tower Security Control Center. Normal version of the map has a hostage.

Batman

 * Fire Hazard - Batarang a fire extinguisher and silently take down a henchman caught up in the smoke.
 * Confiscated Weapon - Use the Batclaw to disarm a henchman, then take him down (upgrade required).
 * Mined Your Step - Detonate a mine using the Mine Detonator as a henchman walks over it. (upgrade required)

Catwoman

 * Gun Thief - Disarm a henchman with an aimed Whip attack.
 * Have A Nice Trip - Slide into a henchman and then knock him out on the ground.
 * Feet First - While standing on a ledge directly above your target, perform a Reverse Ledge Takedown on the henchman below you.

Robin

 * Zip Kick Off - Use the Zip Kick to knock a henchman off of a walkway.
 * Over the Ledge - While hanging from a ledge, grab a henchman and pull him down over the ledge.
 * Round the Bend - Use Corner Cover to hide and then take down an approaching henchman.

Nightwing

 * Bowled Over - Sneak up behind a henchman and knock him off of a walkway with the Electrical Blast.
 * Fall Guy - Batclaw a henchman and pull him off a walkway to take him down.
 * Grate Moves - While in a floor grate perform a Takedown on a henchman.

Batman

 * Fists of Fury - Take down a henchman with a Beat Down.
 * Human Cannonball - Shoot an Armored henchman with the REC Gadget to send him flying back into another henchman.
 * Cold War - Use the Freeze Cluster Grenade to immobilize three or more henchmen at one time. (upgrade required)

Catwoman

 * Cat Fight - Perform a Beatdown on an armed henchman.
 * Caltrop Trip - Knock down an enemy with the Caltrops and then take him down.
 * Don't Touch That Dial - Leave the henchman with the Jammer Backpack until last.

Robin

 * Bullet Shield - Block a henchman's bullets before performing a Shield Bash, then take them down.
 * Round the Bend - Use Corner Cover to hide and then take down an approaching henchman.
 * Fire Hazard - Use a Shuriken on a fire extinguisher and silently take down a henchman caught up in the smoke.

Nightwing

 * Triple Head Shot - Shoot 3 henchmen in the head with the Wrist Dart for one-hit takedown.
 * Feet First - While standing on a ledge directly above your target, perform a Reverse Ledge Takedown on the henchman below you.
 * Mined Your Steep - Detonate a mine using the Mine Detonator as a henchman walks over it. (upgrade required)

Trivia

 * For unknown reasons, an Armored Penguin Thug with Jammer appears in the Extreme version of the Challenge Map, his jammer pack has the TYGER logo.
 * This challenge is considered to be the most difficult of both the normal and extreme versions due to it having no vantage points inside Wonder Tower.