Pickman's Gift

Pickman's Gift is a side quest in Fallout 4.

Detailed walkthrough
Upon entering the gallery, the player character is met with multiple raiders, all of whom are searching for someone named "Pickman" and will attempt to kill the Sole Survivor on-sight, presumably confusing the player character with the man in question. In the room immediately to the left of the entrance one will find the body of a raider that has the holotape Message to Jack on it. Listening to this holotape will give the first clue about Pickman.

There are two different ways that one can enter the hidden tunnels, one is to find the hole in the wall on the third floor and use it to drop down into Pickman's basement, which then leads to the tunnels where one can hear someone calling for Pickman to come out of hiding. Alternatively, one can try to pick the master lock door which also leads directly to the same place. There is a rather high drop that one must jump down to continue exploring, though this will prevent from backtracking, so caution should be taken if ill-supplied.

Continue through the winding tunnels while fighting off numerous raiders and a turret, remaining mindful of the ledges and water. When arriving at a ledge at the end of the tunnel, one will find Pickman at gunpoint from several more raiders, including the leader, Slab. The Sole Survivor can either save Pickman, let the raiders kill him, or kill them all. Even if letting the raiders kill Pickman, the player character still has to fight them afterwards to progress.

After killing all the raiders in Pickman Gallery, one can either loot his body in the event the player character or the raiders killed him, or simply speak with the man if he's still alive. Either option will grant his key, upon which the quest will be added to the Pip-Boy.

If Pickman is spared, he will tell the player character to take a closer look at his painting "Picnic For Stanley". After exiting the house via the tunnel exit nearby, make the way back and re-enter through the front door. On this ground floor in the Northwest corner is a painting of a man with his eyes removed. Activate it to reveal Pickman's safe, which can be opened with the key obtained from Pickman. Collect his gift and complete the quest.

Behind the scenes
This quest is a reference to H.P. Lovecraft's 1926 short story Pickman's Model.

Bugs
If picking the lock on Pickman's safe behind the painting and taking Pickman's Blade before saving or killing Pickman and then the Sole Survivor encounters Pickman, he will still give the key and the player character will have the same conversation options triggering the quest. After deciding Pickman's fate, and returning to his safe, it will show nothing in it and still be unlocked from the way one left it earlier. The quest will still be in the log though. To fix this use the transfer option and place Pickman's Blade back in the safe, exit the safe, re-enter the safe and retrieve the blade again. This will mark the quest as completed in the log and award with experience.

Gallery
Regalo de Pickman Podarunek od Pickmana Подарок Пикмана Подарунок Пікмана 皮克曼的禮物