This quest requires you to extract with the "D-2" extraction on Reserve.
First, turn on the power with a lever in the command part of the underground bunker system. Be aware, activating the lever has the chance to spawn Scav Raiders in the command part of the bunker. Then, press the button on the wall next to the sliding door at the extraction. You need to exit the raid with the "Survived" status to get the quest completion. The "Run Through" status will not complete the quest. To avoid the "Run Through" status, gain at least 200 EXP in raid (by killing or looting) or be in raid for at least 7 minutes before extracting.
D-2 extraction and power lever marked on map
D-2 power lever and the wall button at the extraction
D-2 extraction with the button on the wall
Mechanic