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