Here is the full list of all 17 Red Room achievements.
Broadcast in the Red Room
don't light off
Do not let electricity go out
you found flash light
you found cheong's Letter
You wrote down the phone number and was taken back to the starting point.
You actually imagined getting drunk. This is the real ending.
Matched one number '3'
Matched one number '7'
Matched one number '5'
Matched one number '1'
Matched one number '2'
Matched one number '6'
Matched one number '9'
Caught in the Red Room
you found red room