Reviving Fly

The Black Doctor calls Marked One to calm Panther down. This is our chance to finally resurrect Fly.
This quest is unmarked and doesn't have any canonical name.
== Walkthrough ==
Warning: the entire quest is notoriously bugged. You must do it without saving the game inside the Hospital, otherwise it may fail and softlock you.
=== Hospital ===
Check that Water Bloom and Modified Poltergeist's Heart are both in your inventory, and head to the Hospital. As you approach the entrance, they suddenly transmute into Purple Flower and Modified Poltergeist's Heart Mk II, respectively.
=== Defusing the standoff ===
When entering the final blocked-off section of the building, you will see Panther and the Black Doctor's men holding each other at gunpoint. Panther claims that Black Doctor should give the shard of the Monolith to her because it belonged to her father. Black Doctor calls you to talk.
Walk into the teleport on the ground level and walk around to the second floor teleport, putting you next to him. He informs you that he has managed to preserve Fly's body, making her revival a possibility.
Talk to Panther's father to find out his side of the story. He explored the Zone as a simple stalker and somehow discovered both the Poltergeist's Heart and a recipe for the Stone of Luck that uses the Heart as a main component. Somewhere along the line, the artifact was stolen from him and he was captured by the Black Doctor's men.
=== Stone of Luck ===
The Black Doctor instructs you how to cook the Stone of Luck and allows you to cook the artifact on your own. A bright white circle appears in the closed-off room behind you where the requisite anomalies are prepared for the cooking process. Drop the Modified Poltergeist's Heart Mk II into its very center. Since items are dropped slightly behind and to the right, you'll need to face a very specific way to pull this off. It might not work the first time, so try again until you see a white screen flash. After this, leave the room so you do not interfere with the cooking process.
After a couple minutes, the Stone of Luck should be ready. Collect the artifact and speak to Black Doctor. He reveals that there was never such a thing as C-Consciousness - there was just a group of scientists that continued to work after the second disaster that formed the Zone.
In the dialogue with him, you will have two major story choices.
* Keep the Stone of Luck, to be able to resurrect the girl. This will continue the story.
* Sell the Stone of Luck to Black Doctor for the credit card with unlimited money. This option prevents you from resurrecting Fly and locks you out from continuing the rest of the NS story for your greed.
=== Reviving Fly ===
If you refused to give the artifact to Black Doctor, head over to Fly's body on the same floor where a new anomaly has formed. Toss the Stone of Luck over her body and stand back. After a couple minutes, she should be alive once again! Pick up the Compass Isomorph that transmutes from the process and speak to her.
After your conversation, a new transition from Hospital to Agroprom will open at the very back of the building. Head down for some romantic dialogue with Panther. Her father's illness is already being treated by the Black Doctor, which allows her to think about her own goals for once.
Exit through the transition to Agroprom with Fly, to meet Ghost there and send Fly back to the mainland safely, as well as participate in the Meeting of the authorities.
== Notes ==
* The Modified Poltergeist's Heart MkII, Stone of Luck, and Compass Isomorph all do not cause artifact pickup shock.
* The shard of the Monolith was originally found by Yuri Semetsky and stolen from him by Panther's father. Later down the line Strelok ended up stealing it from Panther's father; the Cave dream was about stashing it in the Cave. Then Strelok crashed on the Death Truck and lost his memory.
== Bugs ==
* The Stone of Luck transmutation process is notoriously bugged; if you saved on the level even once, it can fall through the floor, softlocking the quest. Sometimes it falls through even if you didn't save.