Little Nightmares 2: The Official Companion Guide

Once you drop down at the beginning of the DLC, head to the right until you reach a closed door. Scare the Nome in the background until it gets stuck in the door. Pull the Nome out of the crack in the door and give it a hug. Now pick up the Nome and toss it at the door handle to open the door so you can proceed into the next room. Make sure the Nome continues to follow you throughout the next few rooms. If he stops, simply give him another hug and he will start following you again.
Move into the next room and pick up the Nome again. This time toss the Nome on top of the boxes in the middle of the room (near the foreground). Climb up on the boxes and drop down on the right. The Nome will follow you down. Now pick up the Nome once again and toss it up to the handle hanging from the ceiling near the back of the room. This opens the doorway to the right so you can continue on your way.