Batman: Arkham Origins Blackgate detective cases guide

Sixty Feet Under

Clue #1: Circus flyer

After the Solomon Grundy battle, look to the pile of rubble on the right side of the room to find this.

Clue #2: Pile of human bones

When moving through the sewers underneath Industrial, you'll reach three large gates. Use the Shock Batarang to open the one on the right, then move forward. Head past the vent to the bridge, and drop to the sewage flow below. From here, you can use the Line Launcher to reach the other side, where the clue lies.

Clue #3: Plant life

This can be found when searching for the secret entrance to the warden's office. When you crawl through this brick tunnel, look for this white growth. It can be analyzed for a clue.

Bird of Prey

Clue #1: Clipboard

Before entering Cell Blocks proper, you'll grapple across some vantage points. Drop from the second one to find this on the ground.

Clue #2: Small spade

Early in your exploration of Cell Blocks, you'll encounter a shock stick thug inside a vent. Move left through this vent, and use the Crypto Sequencer to open the next room. On the left side of this area are two vent entrances that connect to each other. The clue is inside this crawlspace.

Clue #3: Acetylene torch

On your way to the exercise yard, you'll enter a belfry. Blow the wooden floor with the Gel Launcher, then prepare to drop. As you fall, grapple the first ledge to your right. Crawl through this small space to find a clue on the floor.

Clue #4: Damaged keypad

While following the Penguin's blood trail, you'll come to a freight elevator you need to call. Instead, drop into the small area to find vent you can crawl through. Do so to find a clue atop a machine.

Breakout Break-In

Clue #1: Rubber hose in a pool of fluid

After encountering your first thug wielding a shock stick in Industrial, drop from the yellow edge of the platform. Enter the small vent here, and the clue will be on the ground to your right.

Clue #2: Crowbar

When you return to Industrial, head to the room marked on the map (it's near the Solomon Grundy fight). In here, you can see a pipe leaking spewing sludge. Use the upgraded Gel Launcher to clog the pipe, stopping the sludge and revealing a clue.

Clue #3: Homemade device

When you revisit Industrial, you'll battle thugs atop some electrical flooring. Grapple over the ledge marked with the skull and guns logo, then grapple to the next ledge. Inside this computer room is the final clue.




  • marc-henri-alcide - November 5, 2013 3:16 p.m.

    i can't find second case from bird of prey( clipboard)
  • Tony Wilson - November 6, 2013 7:41 a.m.

    Before you enter Cell Blocks, you've have to grapple up those two ledges and crawl through a vent right? Before you grapple to the vent, you can actually drop down into a small gated-off area. It's on the ground there.
  • marc-henri-alcide - November 6, 2013 7:43 a.m.

    thanks i got that. do you know how to disable joker gas also? i can't get the personal file case ? thanks in advance.
  • Tony Wilson - November 6, 2013 8:18 a.m.

    I take it you're making your way through Administration presently? Later in the level, you'll get the beta code for the Crypto Sequencer. There's a room above the library (to the right of it on the map) where you have to use the Line Launcher - the room just before the crossed flaming beams. Instead of launching, drop down to find a beta Crypto Sequence box. Complete it, and the gas goes away.
  • marc-henri-alcide - November 6, 2013 8:33 a.m.

    you know where joker had two prisoners then later on he released the gas. thats the case i cant get. i got the code everything. dont know where to go.
  • Tony Wilson - November 6, 2013 9:47 a.m.

    The two prisoners in the library? Yeah, that took me a bit to figure out. In the second room - where the prisoners were actually held - grapple up the left balcony. The vent there can be crawled through even though it looks like it's just leaking gas.
  • leonardo-sensui - November 5, 2013 10:35 a.m.

    you forgot ground zero case file #3
  • Tony Wilson - November 6, 2013 7:40 a.m.

    Still searching, actually. If you've got any tips, feel free to post them here!
  • leonardo-sensui - November 6, 2013 8:42 a.m.

    i found it and i take a picture, but i don't know how explain
  • Tony Wilson - November 6, 2013 9:48 a.m.

    Twitpic me: @chaingunpope

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