Check the lower area near the waterfall to find the trophy.
The trophy can be found under the tower.
[#9] Location:Arkham West
Requirements:Cryptographic Sequencer
Explore the Medical Facility building.
You’ll have to find a control panel (screenshot #1) and use a sequencer on it.
Once the panel has exploded wait for the elevator to move and to reveal the trophy.
Approach the barrier and use the sequencer from here (screenshot #2).
Hacking into the system will suspend the defences and you’ll be allowed to collect the treasure.
[#11] Location:Arkham West
Requirements:Batclaw
Proceed towards the passageway leading to Arkham North.
Before you launch the door look around to find long concrete beams.
Use your hook to get there and once you’ve arrived rip off the grating with a Batclaw.
The trophy is hidden inside the ventilation shaft.
[#13] Location:Arkham West
Proceed towards the passageway leading to Arkham East.
Don’t enter the Abandoned Tunnel.
Instead use the Ultra Batclaw on a ceiling in front of the large gate.
Use your hook afterwards and collect your prize.
Use the Explosive Gel on the wall.
Riddles
[#1] Do you see what I can see?
Then maybe I am in a stronger position.
[#2] Zsasz is counting on you finding his work.
Make your way to the section of the roof located above the entrance to the Penitentiary building.
Stand close to the barrier and overload the control panel with a sequencer from a larger distance.
You may now enter this small room.
Scan the guards killed by Zsasz to complete this riddle.
[#3] Does Scarecrow’s gas break down barriers as it drives you insane?
Examine the left wall near the southern passageway leading to the Abandoned Tunnel.
Once this is done grapple up and scan the tanks left by Joker.
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