The Coffin of Andy and Leyley: Episode 2 Achievements Guide

After Andrew is done in the cultist place and returns to Ashley, there is a cutscene where the hitman enters your motel room. Instead of entering the motel room:
– Go back to the cultist place
– Enter the door on the right that leads to the kitchen
– Interact with the elevator door in the top area
– Go back to the stairs to trigger a cutscene
– After the cutscene, interact with one of the red eyes on the ground
– Light up all nine candles (they’re marked in screenshot #1)
– Turn on the music on the left side of the counter in the top area (look at Andrew’s location in screenshot #2)
– After the cutscene, leave the cultist place

After the hitman enters your motel room, enter it as well and interact with the closet in the top area (where you picked up your gun earlier)

This happens during Ashley’s vision when she falls asleep while they’re in the hitman’s car.

The circles show the locations of the flowers and the present you need to pick up.

The numbers show which paths you need to take and the correct order to go.

While you prepare the ritual to sacrifice your parents, you need to choose between “Trust him.” and “F. that!” Choose “F. that!”

Later in Ashley’s vision you will get to the following area:

Pick up the flowers marked with green circles, follow the way marked with numbers and pick up the black key marked with the yellow circle in the top left corner. After you pick it up, another black key appears next to the door. Pick it up, too.

In the following area, enter the door at the top that is marked with the circle.

Talk to the demon in the top left area that is marked with the circle.

Thanks to user CoolStory, who explained how to get Unknown Summon in this thread: https://steamcommunity.com/app/2378900/discussions/0/6993585599475841022/

Thanks to user tigerboy61, who explained the faster way to get Vision Watcher.

Thanks to user Redwing134 for the information that the area for the Vision Watcher achievement has a missable key.