# "A" rankGet a 100% game completion to earn an "A" rank. This can be done by collecting all journal entries (13 in Jack's Diary, 18 in General Evidence, and 6 in Mythos Tomes), finding the rifle at the reception office door in the refinery, saving Ruth from the rafters, and keeping enough sailors alive during the boat ambush all in under three and a half hours with less than thirty manual saves.
# Hardened Detective mode
Successfully complete the game on the Private Investigator difficulty setting to unlock the Hardened Detective difficulty setting.
# Mythos Master mode
Successfully complete the game on the Hardened Detective difficulty setting to unlock the Mythos Master difficulty setting.
# Background art renders
Successfully complete the game on the Private Investigator difficulty setting to unlock the background art renders.
# Character art renders
Successfully complete the game on the Private Investigator difficulty setting to unlock the character art renders.
# Concept artwork
Successfully complete the game on the Private Investigator difficulty setting to unlock the concept artwork.
# Craig Mullins gallery
Successfully complete the game on the Hardened Detective difficulty setting to unlock the Craig Mullins gallery.
# Safe combination in Variety Store
The combination to the safe in the Variety Store is 2-6-1-2.
