Here is the full list of all 22 Lust form Beyond Demo achievements.
Turn off censorship during gameplay.
Finish the game.
Complete the game in censored mode.
Walk through Lusst'ghaa without receiving damage.
Pick up all the touchable items in the game.
Look at unconscious Mabel for 3 minutes.
Read all the notes.
Look at the cultist orgy for 5 minutes.
Pick up the devil mask, when the light is out in the mansion.
Pick up all the masks.
Talk to the prisoner under the stairs.
Collect all the lauv'abrarc figures.
Open the secret locker in Theodore's bedroom.
Collect all the ritual items.
Read all the letters concerning Mabel and complete all the conversations with her.
Find and use all the sedatives.
Open the tabernacle with as few moves as possible.
Spend a minute reading prayers from Iauv'abrarc's altar.
Pick up all the items in Theodore's room.
Don't show any doubts speaking to the Cult members.
Find and use all the first aid kits.
Finish the dream about the land of Lusst'ghaa.