Resident Evil Zero

Successfully complete the game with any rank on 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.

Once you get the shotgun, do not use it. Instead, leave it in the room with the scale you put the two figures on. Find, but do not pick up, lots of shotgun ammunition. After you save her from the pit, give all the hand gun ammunition to Billy and collect the shotgun ammunition. If you get it all, she will have about 60 rounds, which is much better than using two hand guns.

The main code is 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 7 + 2 = 81. This should activate the brakes for the train.

While playing the Leech Hunter mini-game, kill everything in the Mansion, Train Tunnel, and Basement before picking up any of the leeches. Once you pick one up, you cannot put it down. Each player can find a maximum number of 50 leeches (100 total leaches in the game). One item slot can only hold 10 leeches only -- be careful.

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 get a rank after completing the game it must be played on the normal difficulty setting. You will not get ranked on the easy difficulty setting, but can still unlock the Leech Hunter mini-game.

Enter "4863" on Disc 2, where the cable car is located.

There is a way to determine if you will get the submachine gun or the magnum. Look at the two herbs in front of the stairs in front of you at the start of the mini-game. If the colors are blue and green, you will get the magnum. If the colors are green and green, you will get the submachine gun. The submachine gun can do what the magnum can and requires a lot less ammunition. Green and green is highly recommended. If you want the magnum on the Leech Hunter mini-game, load your game on Disc 1 (only if you have passed the game once and have unlocked the Leech Hunter mini-game), then play the mini-game. You will see a Green Herb and a Blue Herb, indicating that the Magnum is there. If you want the Submachine gun, load your saved file with mini-game on Disc 2 and play the mini-game. You will see two Green Herbs, indicating that the Submachine gun is in the game.

Just run into the room where the leech zombie is (just go billy and leave rebecca outside) and once you get in blast it twice with the shotgun and once it transforms run round it, fire, run around it again, fire etc.

Once you come up against the Scorpion boss and you have the Hunting Rifle just wait until it runs to you and aim down and shoot it (repeat this strategy until necessary).

When playing as Billy with Rebecca as the alternate character, have Billy hold all the pistol ammunition for both characters and keep her gun fully loaded. This gives you one free inventory slot.