We Happy Few

***Another quest that seems a bit buggy. At least for me it was, as it unlocked even though I had definitely "been spotted" by two members of the household.***

This is the final quest in the Treehouse line, given by the "Loony in the Treehouse". Be sure to bring along a few of the Histoplasma mushrooms as you need to be "high" to open the gate, and arrive at the house between 2100/9pm and 0700/7am. Sneak through the house, choking out the residents before they see you. The "high priest" you have to eliminate should be the last one (he is upstairs). I watched a couple of videos on this, and apparently earlier versions and/or the PC version placed some of the NPCs in different areas, so do not count on them to be correct. In my game, here were five NPCs, counting the high priest.

Tip: Once you have eliminated the NPCs, you can collect the "ephemeral linens" needed for the quest. I found 17 and you need ten for the quest. I wound up with seven remaining, which may be stuck in my inventory, as they are quest items. May be best to just collect the ten needed. Update: when you get to The Parade map, and find the shelter in that area, you will find three more ephemeral linens in the room with the bed and all the props. That would total another ten, so you can make another outfit to sell (and get the linens out of your inventory)

Hi everyone, I just did this achievement without starting the treehouse missions, as long as you walk by the building and take some Histoplasma after 9pm (21:00) you should be able to access this area. I believe the issue was that the treehouse lad will tell you how to get in, now we know, skip the troubles if you like.

same achievement repeat in all of this videos guide youtube =