Meltdown Mayhem is a predator challenge map in Batman: Arkham City. The map takes place inside the Sionis Steel Mill.
- Smoke Detector - Use the smoke pellet to create a smoke cloud and take down a henchman as he panics in the smoke.
- Mind Your Head - Knock down a henchman with a batarang and then finish him off with a ground takedown.
- Shock Tactics - Shoot a henchman with the REC gadget and cause him to fire into the air, scaring another henchman.
- Whipped Up - While climbing on the ceiling perform a Takedown on an enemy above you.
- Silence is Golden - Sneak up behind a henchman and perform a Silent Takedown.
- Break Your Fall - Drop down on top of a henchman and then knock him out on the ground.
- Shield Bash - Knock a henchman down with the Shield Bash and then take him down.
- Over the Ledge - While hanging from a ledge, grab a henchman and pull him down over the ledge.
- What Goes Up - When a henchman climbs to the top of a ladder, send him flying back down.
- Bullseye - Shoot a henchman in the body with a Wrist Dart to stun them, then perform a ground takedown.
- Fall Guy - Batclaw a henchman and pull him off a walkway to take him down.
- Fists of Fury - Take down a henchman with a Beat Down
- Armor Piercing - Take out the armored henchman first.
- Bringing Down The Roof - Explode a weak ceiling onto a henchman to knock him out.
- Venting Anger - Perform a takedown through a vent cover on a henchman.
- Lone Gunman - While climbing on the ceiling, perform a Takedown on a sniper above you.
- Grate Moves - While in a floor grate perform a Takedown on a henchman.
- Window Pain - Perform a Takedown through a glass window.
- Zip Kick Off - Use the Zip Kick to knock a henchman off of a walkway.
- Have A Nice Trip - Slide into a henchman and then knock him out on the ground.
- Friends Fly Free - While hanging from a ledge, grab two henchmen simultaneously and pull them down over the ledge.
- Triple Ricochet - Knock down 3 henchmen at once with the Escrima Stick.
- Rope-a-Dope - While on a Line Launcher wire walk, perform a Drop Attack on a henchman.
- Three Strikes - Punch any three different armed henchmen.