Here is the full list of all 29 Room 208 achievements.
Enter the "Otherside"
Find and read 1 note
Find and read 30 notes
Use the camera to find 1 hidden symbol
Use the camera to find all hidden symbols
Complete the 4 color picture switch puzzle
Replace the missing gate lever
Open the gate using the levers
Find and replace the missing square picture
Complete the rotate picture puzzle and open the locked box
Open a secret path
Complete the colour light bulb puzzle
Stop the steam blocking the way forward
Find and replace all candles correctly
Correctly align the fish statues
Find and place the missing green objects
Correctly set the clock time and open the door
Place all 3 books back on the shelf in the correct order
Match the picture correctly and open the door
Set all the bulb switches correctly
Open 1 locked locker
Open 3 locked lockers
Solve the box button puzzle
Replace 2 fuses
Leave the building and venture outside
Defeat the evil that resides in the "other-side"
Enter the safe combination correctly
Collect 35 or more spirit fragments in one play through
Complete the game in under two hours