Here is the full list of all 38 Alone in the Dark achievements.
Break through a barrier
Kill a monster with an opportunity
Kill a monster with a melee weapon
Kill a monster with a ranged weapon
Put a talisman socket back together
Finish the game in 3 hours or less
Play for more than 8 hours
Break into Derceto
Find your own talisman
Find Jeremy’s bag
Talk to Jeremy in the chapel
Find the Convent of Taroella
Escape the Dark Man
Walk into the desert
Return to Derceto
Own up to your awful past
Break through the barriers of self-deceit
Get what you want
Enter hell
Break the Pact with the Dark Man
Save New Orleans from the Black Goat
Finish a Lagniappe set
Aim your gun at a human being
Give Grace a present
Consider ending it all
Submit to the Dark Man
Join a cult
Kill an enemy with fire
Kill an enemy with shotgun
Kill an enemy with Tommy gun
Open all of the safes and locks in the game.
Talk to everybody about everything
Find all the lagniappes
Finish the game without drinking from your flask
Read all the clues
All Achievements