Here is the full list of all 30 The Dark Pictures Anthology: The Devil in Me achievements.
Kate and Jamie both escaped the glass trap
Completed the prologue
Jeff and Marie watched each other die
Completed the Solo Story
No-one survived
Everyone survived
The dog made it off the island alive
Charlie survived the furnace
Mark got the lighthouse working
The crew didn't trust Charlie and he paid the price
Kate fell for Du'Met's impersonation
Mark agreed to Du'Met's proposal
Jamie reset the fuse box
Charlie's hand was crushed
Jamie and Erin kissed
Yes, you can pet the dog
Kate and Mark rekindled their relationship
Jamie chose to sacrifice herself in the glass trap
Jamie chose to save Erin in the suffocation chamber
Charlie maintained control during dinner
Fixed all of the fuse boxes
Obtained all of the inventory items
Found all of Mark's photo opportunities
Took a photo of each crew member
Found all of the Silver Framed Secrets
Found all of Du'Met's business cards
Collected 200 obols
Found all of the Black Framed Pictures
Found all of the White Framed Pictures
Found all of the Secrets