Party Animals

in the long corridor after you come across the first enemy take a left into 'no entry' doors and stand next to the monolith
achievement will pop after tutorial is finished

In the new tutorial added with this title update, you need to progress past the first lizard enemy and into the hallway. You should notice a Do Not Enter door in the background of this area. You can actually enter this room to find a monolith standing alone inside. Stand in front of it for at least 5 seconds. This won't pop immediately and requires you to complete the tutorial having done this.