We Were Here

‪This is a 2 player online only co-op game.
One player plays as the explorer and the other is the librarian
You need to do 2 and a half playthroughs to get all the achievements
The game takes about 15-20 mins to finish a playthrough
You have to playthrough once as the explorer then once as the librarian
Then you need to play up to the dungeon for the last achievement
You need to do each puzzle perfect the first time for an achievement
You also need to do a play through without dying
My video is 18 mins long and it will guide both sides through simultaneously
The explorer does most of the work

For this achievement you need to solve puzzle 3 (Valves) as the librarian. See in video at 4:00

Achievement Walkthrough:
Timestamps
Invite: 0:40
Puzzle 1 (Eyes): 1:30
Puzzle 2 (Paintings): 2:50
Puzzle 3 (Valves): 4:00
Puzzle 4 (Dungeon): 5:00
Puzzle 5 (Chess): 7:50
Puzzle 6 (Spikes): 9:25
Puzzle 7 (Theater) 11:15
Ending: 15:35‬

For this Puzzle, the explorer will find a room filling with water. There will be a sign above the door. They must tell you the name of the word and the color of the word. Remember those 2 colors

Now go to the back of the room. The door is open now. It takes you down stairs to a flooded basement. You need to talk on the objects to get to the valves. Now interact with the 2 valves that match the colors your partner told you. After you press them correctly. You will here a jingle and your Cheevo will pop🏆
Here is my Librarian Guide: