Call Of Cthulhu: Dark Corners Of The Earth

Call Of Cthulhu: Dark Corners Of The Earth cheat codes: 
Hardened Detective difficulty:
Successfully complete the game under the
Private Investigator difficulty setting.

Mythos Master difficulty:
Successfully complete the game under the
Hardened Detective difficulty setting.

"A" rank:
Get a 100% game completion to earn an "A" rank.
This can be done by collecting all journal entries
(thirteen in Jack's Diary, eighteen in General Evidence,
and six in Mythos Tomes), finding the rifle a reception
office door in the refinery, saving Ruth from the rafters,
and keeping enough sailors alive during the boat ambush
all under three and a half hours with less than
thirty saves done manually.

Variety Store: Safe combination:
The combination to the safe in the Variety Store is 2-6-1-2.