Blacksad: Under the Skin
39 Achievements
Shadow play
Take your fourth beating.
26.8%
How to unlock the Shadow play achievement in Blacksad: Under the Skin - Definitive Guide
Manny C90
TrueAchievements
TrueAchievements
the Si1ver King
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TrueAchievements
This part feels like there may be multiple successful ways to go about it, but this is what I did:
Find the trap door by the building and look in the window and at the doorbell. Look at the button behind the trash (you may have to talk to Jake first), fail to move it, then ask Jake to help you move it.
(I didn't try to go inside, but you may be able to get Jake's help to do that. If you can, then the doorway is the right path to downstairs, not the hall.)
Downstairs, you have to find a light before you lose your lighter. It is behind (as you're looking, on the right side of) the shelves in the middle of the room, above head level, where you have to lift your light to get it's interaction point. Once you have the flashlight, you can find the light switch - I didn't try turning them on, but it seems like it would be a bad idea for later.
Beyond the door is a freezer, and a latch near the floor will unlock a shelf so you can move it.
In the next room, in the far back is a book on a table with a note on it that will give you a clue. There's also a password on a nearby blackboard, and just generally a lot to look at. In the office next door, there are files to look at behind all of the paintings, and drawers in the desk to open.
As you go to leave, O'Leary's men will start to come in. If you're trying for a no-death playthrough, make sure to dodge to your left when Blacksad tries to hide. Also do not try to intervene for Jimmy, because you will die.
Afterwards, you'll sneak out. When you get outside, don't try to hide (you will die). I rang the doorbell; I'm not sure what happens if you attack, but I doubt it works.
Downstairs again, don't interrupt O'Leary (you will die). When you have the opportunity to, use your senses and inspect the photo. You can soon make a deduction:
The Niagara Falls achievement in Blacksad: Under the Skin worth 69 pointsHelp the Colberts live a second honeymoon and receive their gratitude.
The The Reaper achievement in Blacksad: Under the Skin worth 191 pointsContribute to as many deaths as possible.
You can safely turn down O'Leary's money without offending him to the point of killing you.
After you leave, Blacksad will walk away, narrating about narrating, and then after a single QTE button and using your senses (to look at the jacket), you will get this achievement.
Story-related and cannot be missed.
After getting hired for a second time, Blacksad will head back to the gym and ask Jake to take him to O’Leary’s hide out (try to talk to him then ring the bell). There are two ways to get into the hide out: 1) Get Jake to ring the doorbell at the front door, allowing Blacksad to lock-pick his way in through the back door; or 2) have Jake help move a dumpster so that Blacksad can use the street elevator. Out of the two, taking the elevator is the safest option. The back door requires lock-picking one door, and then lock-picking a second, harder door with a timer, which leads to more chances of dying. However, there are sports cards that are available in the entryway that the second door is in (avoid going down the hallway as this will lead to death).
Once Blacksad is in the basement, he will have a timer in order to find a flashlight that’s at the top of the shelf in the middle of the room. Do not turn on the lights, as if you interact with the light switch, it will result in death. Look in the walk-in refrigerator to find a secret door to O’Leary’s headquarters. Investigate every hotspot in the headquarters. Once everything is looked at, Blacksad will have to do a QTE to hide; press 
to jump over the half-door and then 
to hide. At this point, Blacksad will witness an execution, and it is very important that you DO NOT attempt to save Jimmy as this will result in Blacksad’s death.
Once that is done, Blacksad will escape, however he will find himself cornered after he tries leaving through the back door. Select “Ring the doorbell”, as the other options will lead to death. Blacksad will now be interrogated by O’Leary just like Jimmy. Do not interrupt O’Leary’s monologue as that will result in death. There will be a cat senses-sequence and Blacksad will deduce a solution out of this situation. You will have the option to share Blacksad’s knowledge of Colbert’s affair with O’Leary or tell O’Leary that Colbert invited him over. Telling O’Leary about the affair will result in Colbert’s death. Telling O’Leary that Colbert invited him over will have to have Blacksad say some drunk guy “He kept bragging about how he was banging another guy's wife" to get Colbert to play along with his lie. (Keep in mind Niagara Falls and The Reaper when making this decision.) When O’Leary asks why Blacksad decided to come to his hideout at such a late hour, do not taunt him or remain silent (I went with cats and wolves hunt at night).
Once Blacksad is free, he will get assaulted. You will need to press for the QTE during the assault to prevent getting shot.