Call Of Cthulhu: Dark Corners Of The Earth
Get 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.
Successfully complete the game on the Private Investigator difficulty setting to unlock the Hardened Detective difficulty setting.
Successfully complete the game on the Hardened Detective difficulty setting to unlock the Mythos Master difficulty setting.
Successfully complete the game on the Private Investigator difficulty setting to unlock the background art renders.
Successfully complete the game on the Private Investigator difficulty setting to unlock the character art renders.
Successfully complete the game on the Private Investigator difficulty setting to unlock the concept artwork.
Successfully complete the game on the Hardened Detective difficulty setting to unlock the Craig Mullins gallery.
The combination to the safe in the Variety Store is 2-6-1-2.