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