Get the Good Ending:
To get the good ending, save at least 50 Innocents before returning to the train.

Infinite Glyph Glitch:
When playing, have two players access a permanent increase Glyph (either Strength or Accuracy) at the same time and the Glyph will always be available. The regular Glyphs (Health and Conviction) are disabled on the fourth use; if one player uses a Health Glyph three times, have two people use it at the same time for the fourth time to enable the glitch.

Unlock Nightmare Mode:
To unlock Nightmare Mode, finish the game once. Nightmare Mode will be available in the Special Features menu when you begin again.

Unlock Ultimate Hunter Mode:
To unlock Alternate Hunter Mode, complete the game once. Now each hunter will have a different costume to select. Turn the Mode on at the Special Features screen