All weapons:
During play on the first level, press B, Up, Left, Down, Right, B, B to get the best of each weapon.

Max Weapon Damage:
During play on the first level, press Down, Down, B, Y, Down, Down..

Good Ending:
Save at least 50 innocents.

Sound test:
During play, press Left, Left, B or Right, Right, B.

Alternate Hunter and Nightmare modes:
Beat the game with any character. Both modes are found at the Special Features screen.

Strength and accuracy glyphs:
In the catacombs, go to the place where you find the two sisters. Shoot the walls until you find one that makes smoke. Eventually, the wall will crumble and inside should be a strengh glyph.

At the beginning of the mansion E1 level, go to the fountain and turn left. Follow the road and then follow the wall until you come by three trees. You'll find a strength glyph in the trees.

On the mainyard 1 level, rescue the girl in the basketball court and then head back to the beginning of the level. Go up the ramp that you couldn't go up before. There should be a accuracy glyph lying around.

Thanks to Revolution readers Fred Russell, Papas Foryhvh, Jeff Bayne, Judge 69, A Mac, Papas4yhvh, ADAM: THE HUNTER, Jesus"DaBomb"Reyes, and Ryan "The Lion" Williamson!