4H. Part Eight - Chemistry =

Glasshouse Entrance: Defeat the two guards, hack the security box, and collect the nearby Riddles, Joker Teeth, Interview Tape, and Chronicle of Arkham. Crawl into the vent near the entrance to find a lower area.

Botanical Glasshouse: Engage the six guards, using gargoyles and ledges for cover. Proceed through the eastern door. Collect the Riddle in the alcove on the north wall, the Riddler Trophy in the floor vents near the tea set, and another Riddler Trophy inside the fountain by blowing open a weak wall.

Statue Corridor: Follow the corridor. Collect the Riddle from the plaque on the park bench, three Joker Teeth, and an Interview Tape from a park bench.

Glasshouse Generator Room: Defeat the six goons, including one with a stun baton and one with knives. Hack the booby-trapped control box by hitting the correct signal three times within a time limit. Return to the Botanical Glasshouse. Collect the Interview Tape near the janitor. Use the Range Amplifier to grapple to the upper level, hack the office box, and collect the Secrets Map and a Riddler Trophy.

Botanical Glasshouse: Take the north door.

Flooded Corridor: Joker has blocked the path. Use the vent on the other side of the water. Collect two Joker Teeth in front of the vent cover. Inside the vent, look down through a grating to find a Riddle (gloves and mask) and another Riddler Trophy. Exit the vent, blow open the weak wall, and proceed through the door.

Abandoned Chamber: This area prevents grappling. Head left, jump across the gap, go down steps, up the far steps, and jump northeast. Collect a Riddler Trophy by jumping west from the northeast corner to grab a ledge, shimmying west, jumping east from a water-filled ledge, heading south, and using a Batarang on a rope to drop a walkway. Cross the walkway and head north. Collect another Riddler Trophy by dropping to the bottom floor, entering the water in the northeast corner, and crawling south. Collect a third Riddler Trophy at the bottom floor by going north, finding a floor vent leading south to a blocked room.

Flooded Corridor: Climb ledges to the vent and crawl through, defeating two punks. Head northeast. Collect a Riddle (toy soldiers) by heading south down the corridor. Collect another Riddle (plaque in front of ruined statue) as you head northeast. Collect an Interview Tape from a bench in the room where you fought henchmen.

Aviary: This is a predator section. Avoid guards wearing collars and take out the guard in the control room first. Use vents and grappling points to reach the controller above. Once the control room guard is neutralized, defeat the remaining three guards. Follow Harley's trail to a panel, open it, and crack the booby-trapped security box. Head through the door. Collect a Riddle (skeleton in silk) high on the west wall, an Interview Tape on a park bench near the cages, and three Joker Teeth in the control room.

Titan Production Facility: Fight the Twin Titans. Use Batarangs when they charge (arms raised, growling). Focus on one at a time, being aware of the other's attacks. After hitting them against walls, hop on a Titan's back when its health is low and steer it to use its attacks.