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Batman: Arkham Knight: Batman: Arkham Knight 100% Completion Guide

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ACE Chemicals

Oracle's Clock Tower, two antennas that pinpoint Scarecrow, the rescue at ACE Chemicals, and five firefighters around Bleake Island before you report back to Gordon.

The hunt for Scarecrow takes you from the Clock Tower to two antennas and on to ACE Chemicals. You gain the Power Winch for the Batmobile at Panessa Studios, and Batsuit v8.03 with the Fear Multi-Takedown on the Falcone Shipping roof, plus an Afterburner on the way to the Clock Tower. You can't return to ACE Chemicals after this stretch, and that costs nothing: no Riddler challenge is there. Left for later: every Riddler challenge beyond the three you have, and the firefighters on the other islands.

Meet Oracle at the Clock TowerQuest step
Location
Bleake Island · Clock Tower – From Merchant Bridge, take the GPS route to the Clock Tower in Chinatown; just outside it is (2214, 2179), and Lucius unlocks the Afterburner on the drive. Grapple to the roof, find the hatch in Detective Mode and go in. Use the small bust on the bookshelf, which is a retinal scanner, then the computer that appears in the room.
Requires
Summary
Your first visit to Oracle's base, where the search for Scarecrow's signal starts.
Sources
Report an issue
The Perfect Crime: rooftop body by the Gotham HeraldQuest step
Location
Bleake Island · Chinatown – Climb out through the Clock Tower's roof hatch and glide to the roof of Namielski's Pierogi Palace (2007, 2472), close to the Gotham Herald; it may instead be on the Herald's own roof, the one with the radio tower. Scan the arm scars at skin level, the pacemaker at muscle level and the knee at bone level.
Requires
Summary
The second of six bodies for The Perfect Crime. Only the first is on the map, so listen for the opera.
Sources
Report an issue
Use the Panessa Studios antennaQuest step
Location
Bleake Island · Panessa Studios – Head back to Panessa Studios and land on its roof; the roof door is at (1804, 2880). Attach the Remote Access Device to the marked power panel. It fails, and Lucius offers a way to get power here.
Requires
Summary
The first of the two antennas. It turns out to have no power.
Sources
Report an issue
Power WinchKey item
Location
Bleake Island · Panessa Studios – Go to the drop marker at ground level by the lighthouse near Panessa Studios. Park the Batmobile on it, or stand there yourself and call the car, and a short scene fits the winch.
Requires
Summary
A Batmobile winch that pulls down walls, raises ramps and powers machines. The route leans on it from now on.
Sources
Report an issue
Power up the Panessa antennaQuest step
Location
Bleake Island · Panessa Studios – In Battle Mode, winch down the sign facing you, back up the ramp and hit the Afterburner to clear the gap to the next roof. Winch up the raised section on the right, take the narrow route to the end of the roof, winch the anchor on the studio building, drive off the edge and up its wall. Winch the panel you tried earlier and pump the accelerator to hold the needle in the orange.
Requires
Summary
A Batmobile climb across the rooftops to feed the first antenna.
Sources
Report an issue
Batsuit v8.03Key item
Location
Bleake Island · Falcone Shipping – Glide to the Falcone Shipping roof; the Batmobile has to stay behind, powering the antenna. Five armed men and a hostage are in the rooftop building, so throw a Batarang by its door to draw two out and take them down silently. Then stand on the drop marker for the suit.
Requires
Summary
The upgraded suit. It gives you the Fear Multi-Takedown, which chains takedowns on several enemies.
Sources
Report an issue
Use the antenna at the Falcone Shipping YardQuest step
Location
Bleake Island · Falcone Shipping – Enter the floor grate by the rooftop building and crawl under the room, then use the Fear Multi-Takedown on the last three men. Free Detective Cottell and attach a Remote Access Device to the panels at the side of the room. Outside, turn both receivers until they face ACE Chemicals.
Requires
Summary
The second antenna, which fixes Scarecrow's position at ACE Chemicals.
Trophies
  • Achievement · SteamThe Frequency of Fear
  • Achievement · XboxThe Frequency of Fear
  • Bronze · PlayStationThe Frequency of Fear
Sources
Report an issue
Training: Throw CounterAchievement
Location
Bleake Island · Falcone Shipping – On the Falcone Shipping roof, start the Throw Counter icon. Lean the stick at an attacker and press counter as his warning shows, five times; you need not knock anyone out.
Requires
Summary
An optional Training map on the Falcone Shipping roof, worth one WayneTech point the first time you finish it.
Sources
Report an issue
Training: Predator FundamentalsAchievement
Location
Bleake Island · Falcone Shipping – Start the Predator Fundamentals icon on the same roof. Take out all three armoured enemies with ordinary silent takedowns, staying out of sight.
Requires
Summary
An optional Training map on the Falcone Shipping roof, worth one WayneTech point the first time you finish it.
Sources
Report an issue
Training: Grapnel Boost Mk IIAchievement
Location
Bleake Island · Falcone Shipping – Start the Grapnel Boost Mk II icon. Grapple and glide through every ring, diving when the next one sits low, then stay in the air for a full minute.
Requires
Summary
An optional Training map on the Falcone Shipping roof, worth one WayneTech point the first time you finish it.
Sources
Report an issue
Training: Summon, Eject & GlideAchievement
Location
Bleake Island · Falcone Shipping – Start the Summon, Eject & Glide icon. Summon the Batmobile, eject, glide through all the rings and summon the car again.
Requires
Summary
An optional Training map on the Falcone Shipping roof, worth one WayneTech point the first time you finish it.
Sources
Report an issue
Training: Fear Multi-TakedownAchievement
Location
Bleake Island · Falcone Shipping – Start the Fear Multi-Takedown icon, which has four scenes. Reach the first three groups from behind or through the vents. In the last, wait for the guards to line up on the balcony, hit the one on the left and dash to the other two.
Requires
Summary
An optional Training map on the Falcone Shipping roof, worth one WayneTech point the first time you finish it.
Sources
Report an issue
Death and Glory: 20 Fear TakedownsAchievement
Location
Bleake Island · Falcone Shipping – The count goes up each time you start and finish a Fear Takedown, however many enemies it hits. The fast way is the Fear Multi-Takedown training icon on the Falcone Shipping roof: it has four per run, so five runs make 20. Or skip that and keep using them; the trophy usually comes on its own during the story.
Requires
Summary
A running total of 20 Fear Takedowns over the whole game.
Trophies
  • Achievement · SteamDeath and Glory
  • Achievement · XboxDeath and Glory
  • Bronze · PlayStationDeath and Glory
Sources
Report an issue
Spend WayneTech points with some care

Story and side missions alone may not pay for every upgrade, and later Riddler and Most Wanted work needs a few specific ones. Keep a couple of points spare, and the route will say when one is needed.

Rendezvous with Gordon at the ACE Chemicals plantQuest step
Location
Bleake Island · ACE Chemicals – Summon the Batmobile and drive to the bridge leading to ACE Chemicals, where a scene plays. When it ends, grapple to the wall above the main gate.
Requires
Summary
The story's first look at the plant, and at the militia guarding it.
Sources
Report an issue
Predator: clear the ACE terminal, scan for the workersQuest step
Location
Bleake Island · ACE Chemicals – Keep off the courtyards: the tanks there will kill Batman on foot. Use the floor grates to take the five soldiers around the terminal, finishing the pair beside it with a Fear Multi-Takedown, and use the terminal. Grapple to the top of the tallest building and hold the scan on each signal until all five are marked.
Requires
Summary
A stealth room, then a scan that marks where the five missing workers are.
Sources
Report an issue
Open the main ACE Chemicals gateQuest step
Location
Bleake Island · ACE Chemicals – Go to the worker marker closest to the main gate, a small shack built onto the wall. Break in through its roof windows, beat the five Thugs, check the worker and pull the lever on the wall beside him. Take remote control of the Batmobile, winch the road section up into a ramp and jump the gap with the Afterburner.
Requires
Summary
Opens the plant to the Batmobile, which every later step here needs.
Sources
Report an issue
Rescue the ACE Chemicals workersHidden spoiler – activate to revealQuest stepMinor spoiler
Location
Bleake Island · ACE Chemicals – Beat the five tanks, winch down the ramp on the right wall and cross the narrow walkway to tear open Mark Cheung's building; when you are trapped behind glass, use Remote Batmobile Control to fire on the men outside, then drive him to Gordon. Back inside, clear the platform above the hanging ramp, set the ramp level, jump it, destroy the eight tanks and winch the anchor under the Loading Dock sign. On foot, go through the weak walls and floor with Explosive Gel, winching the steam off when told, and use the Batmobile as the lift's counterweight to reach Adam Brewer.
Requires
Summary
A long push through the plant, on foot and in the Batmobile, to all five worker markers.
Sources
Report an issue
Arkham Knight attack helicopterBoss
Location
Bleake Island · ACE Chemicals – Stepping out of the lift starts the fight. Clear the five Drone Tanks first while dodging the red circles, shoot down homing missiles with the Vulcan Gun, then hit the gunship with Vulcan and 60mm Cannon. Use the switch by the way in, and drive Adam Brewer to Gordon on the bridge.
Requires
Summary
The first boss, fought in the Batmobile.
Trophies
  • Achievement · SteamFear of Faith
  • Achievement · XboxFear of Faith
  • Bronze · PlayStationFear of Faith
Sources
Report an issue
Stop Scarecrow from blowing up ACE ChemicalsQuest step
Location
Bleake Island · ACE Chemicals – Back in the compound, shoot the glowing target on the wall, turn the hanging ramp to face the hole and drive through to the service tunnels. Follow them past the sentry room (under-floor vents, then the panel) and the big group of soldiers, and eject over the last gate. Clear the eight soldiers and three turrets, enter the chamber, use the panel and carry the four cylinders across very slowly, stopping whenever a light turns yellow.
Requires
Summary
The last push into the plant, through the service tunnels to the Mixing Chamber.
Sources
Report an issue
Flashback as Gordon at Panessa StudiosHidden spoiler – activate to revealQuest stepMinor spoiler
Location
Bleake Island · Panessa Studios – You start on the Panessa Studios roof. Go down the stairs, through the door and take the elevator, then walk into the lab and interact with each cell until a scene starts.
Requires
Summary
A short scene played as Gordon, some time before the story began.
Sources
Report an issue
Escape ACE ChemicalsHidden spoiler – activate to revealQuest stepMinor spoiler
Location
Bleake Island · ACE Chemicals – Back as Batman, take Remote Batmobile Control in Battle Mode and winch the anchor on the chamber wall until the wall gives way. Jump in, race back through the service tunnels, and use the Afterburner to clear the broken bridge and reach Gordon.
Requires
Summary
A timed Batmobile run out of the plant. You can't come back here afterwards.
Trophies
  • Achievement · SteamAs the Crow Flies
  • Achievement · XboxAs the Crow Flies
  • Bronze · PlayStationAs the Crow Flies
Sources
Report an issue
The Line of Duty: Adamson, pier north-east of the ACE bridgeQuest step
Location
Bleake Island · Chinatown – These five appear once ACE Chemicals is gone. From the ACE bridge, cross to the pier north-east of it (1543, 2105). Six unarmed Thugs hold Adamson; beat them and free him.
Requires
Summary
One of the 15 missing firefighters you rescue for The Line of Duty.
Sources
Report an issue
The Line of Duty: Ashley, Terrace Garden Bar roofQuest step
Location
Bleake Island · Chinatown – A short hop away, Ashley is up on the Terrace Garden Bar's roof (1815, 2217). Grapple to the roof above and open with a Fear Multi-Takedown on the gunmen, then hold counter against the knife attacks and free him.
Requires
Summary
One of the 15 missing firefighters you rescue for The Line of Duty.
Sources
Report an issue
The Line of Duty: Cannon, across from the Clock TowerQuest step
Location
Bleake Island · Chinatown – Go to the back of the waterside building across from the Clock Tower (2278, 2305); if nobody is there, quit to the main menu and load back in. This group is tough, with tasers, stun sticks and shields, so start with a Fear Multi-Takedown, stun shield carriers with the cape and stomp them, then free Cannon.
Requires
Summary
One of the 15 missing firefighters you rescue for The Line of Duty.
Sources
Report an issue
The Line of Duty: Norman, Falcone ShippingQuest step
Location
Bleake Island · Falcone Shipping – Head to the water's edge at Falcone Shipping (2268, 3173). Use the overhead light for an environmental takedown on the big Thug, beat down anyone who shrugs off punches, stomp the shield carriers and set Norman free.
Requires
Summary
One of the 15 missing firefighters you rescue for The Line of Duty.
Sources
Report an issue
The Line of Duty: Wyatt, Cauldron pierQuest step
Location
Bleake Island · The Cauldron – Follow the docks to the pier with the cranes (1989, 3183), between Falcone Shipping and the lighthouse. Every Thug here has a gun, so stay quiet: take those on patrol first, then the group by Wyatt from a crane or a vent. He is the last firefighter on Bleake.
Requires
Summary
One of the 15 missing firefighters you rescue for The Line of Duty.
Sources
Report an issue
Officer JT WickerHidden spoiler – activate to revealNPCMinor spoiler
Location
Bleake Island · GCPD Lockup – He should be the officer marked in green in the holding cells past the foyer, near the entrance. No fight is needed: walk up and press counter to question him.
Requires
Summary
A police officer on the Riddler's payroll. Questioning him marks the Riddler challenges inside the GCPD.
Sources
Report an issue

About this guide

Two playthroughs. Run 1 on Normal or Hard does the story, every Most Wanted mission, Season of Infamy, all 243 Riddler challenges and the Knightfall Protocol, with free roam still open afterwards. Run 2 is New Story+, played on Knightmare, for the main missions and Blunt Trauma. The Arkham Episodes, A Matter of Family and the AR challenges come last.

Last verified: Nov 5, 2026 · Patch PS4, Xbox One and Steam, latest patch, with all DLC · 0 community corrections shipped

Unofficial fan guide. Not affiliated with the publisher.