Alternate costumes:
Successfully complete the game with any rank under the normal or hard
difficulty settings. Start a new game. A Closet Key will appear in your
inventory. Use it to unlock the closet in the room where the Hunting Gun was
first found to access new costumes for Rebecca and Billy.
Completion bonuses:
Successfully complete the game with a "B", "C", or "D" rank to unlock the
Leech Hunter mini-game.
Successfully complete the game with a time between 3:31 and 5:00 for an "A"
rank to unlock the Submachine Gun and Leech Hunter mini-game.
Successfully complete the game with a time of 3:30 or faster for an "S" rank
to unlock the Rocket Launcher, Submachine gun, and Leech Hunter mini-game.
Note: To a rank after completing the game it must be played under the normal
difficulty setting. You will not get ranked under the easy difficulty setting,
but can still unlock the Leech Hunter mini-game.
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