Guides
Nintendo Wii : Biohazard 0 Cheats
Below are the cheats, hints, and tips that Game Gas knows about for Biohazard 0. On the right are
websites that may have additional cheat codes, hints, or tips for Biohazard 0.
Custom handgun
When you are in the draining room in the facility basement, you will find the Duralumin case. You have to enter a code, which is 385. The case will open and you will find handgun parts. Combine these with Billy's handgun for a more efficient handgun.
Leech Hunter minigame rewards
After unlocking the Leech Hunter minigame you can earn the following rewards by collecting the corresponding ammount of leeches in the game:| Unlockable: | How to Unlock: |
| Unlimited ammo for all weapons that are found in the main game. | Obtain 100 Leeches |
| Unlock Machine Gun Ammo for the main game. | Obtain 1-29 Leeches |
| Unlock Magnum Revolver for the main game. | Obtain 99-90 Leeches |
| Unlock unlimited ammo for all Handguns found in the main game. | Obtain 30-59 Leeches |
| Unlock unlimited ammo for the Hunting Rifle in the main game. | Obtain 60-89 Leeches |
Items
In the train there are items. If you do not need them, select them but do not take them. When the train crashes, items will be scattered around the wreck. Those are the items that you selected. The items not selected will disappear. This is very important if playing under the hard difficulty setting.
Piano room
When you get to the piano room, make sure you have both characters with you. Have Billy play piano. A door will open by the bar. Have Rebecca go in and take the battery. The door will close. Have Billy play piano again and the door will open.
Resident Evil 2 areas
When you eventually get onto the moving cable car, after Billy is taken over the railing by an ape, go across the ravine and head up the pair of steps. You will enter a big room with a metal floor. This is the same area in Resident Evil 2, where you call up the platform train to head down into the main factory (and where you fight a stronger version of the William Birkin mutations). If you go towards the bottom of the screen and go down the lift and into the back room, you will find a television screen with a picture of a Tyrant. This is the same room where you see Mr. X walking towards the camera before smashing it. If you call up the platform and take it down, you will enter the factory sub-levels and walk into the room where Leon/Claire had to carry Ada/Shelly to the security room.
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.
Game Unlockables
Beat the game on Normal or Hard difficulty to get a specific ranking. According to the ranking you'll receive the corresponding unlocked extras.| Unlockable: | How to Unlock: |
| Closet Key and Leech Hunter Minigame | Obtain Ranking B (Finish in 5:01 - 7:00) |
| Closet Key and Leech Hunter Minigame | Obtain Ranking C (Finish in 7:01 - 9:00) |
| Closet Key and Leech Hunter Minigame | Obtain Ranking D (Finish in 9:01 and more) |
| Machine Gun,Closet Key and Leech Hunter Minigame | Obtain Ranking A (Finish in 3:31 - 5:00) |
| Rocket Launcher,Machine Gun,Closet Key and Leech Hunter Minigame | Obtain Ranking S (Finish in 3:30 and below) |
Safer and faster shotgun reload
To reload the shot gun faster, press Y to go to the item screen. Combine the shotgun ammunition with the shotgun. You will be able to attack again without having Billy or Rebecca reload and waste precious time.
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.
Resident Evil Outbreak
The area where the turntable is located is from Resident Evil Outbreak. The turntable, elevator, the door that has main shaft on the wall, and the Security Room are on Resident Evil 0. These items are on the Below Freezing Point level in Resident Evil Outbreak. Also, the giant hanger where you defeat the G-Monster on Resident Evil Outbreak is also located in Resident Evil 0.
Leech Hunter: Determining weapon
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.
Longer life
When you start the game as Rebecca, get to the point where you meet Billy. He will say that they need to cooperate. When Billy joins you on your mission, it is best if you have him in control at all times. Because he has stronger defense and will not get damaged as fast as Rebecca. Note: This works in all modes.
Better shotgun use
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.
Extra inventory slot
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.
One hit kills
When playing as either Rebecca or Billy and you get bit by a zombie, move the character opposite of your main character directly behind the one you are controlling to have him or her shoot the zombie in the head and kill it in one hit, while the zombie deals you no damage. Note: You must have pistol equipped to save ammunition for a one bullet kill.
Killing zombies
With the shotgun, aim down to the zombie's leg and blow it away. He will fall. Then, take out the handgun and shoot him one more time.
Easy Leech Zombies kills in hard mode
From the beginning of the game onward, you will find a lot of empty bottles. Do not ignore them. Pick them up and combine them with the gas can for the Molotov cocktails. Two of these will take out a Leech Zombie. Also, it will not explode as usual; you no longer need to run away. It will also kill a zombie with one hit or two zombies at once if you hit directly between both of them. Note: This weapon can harm you or your partner if thrown too closely.
Chess puzzle
Look at the smaller chess board on the desk in front of the big one. Arrange the big pieces the same way. The difference is the only white piece by itself. Use Billy to push it down, to the right, and finally right in front of the black piece. The desk will now open.