Leech Hunter is an unlockable minigame for Resident Evil 0. To unlock it, simply beat the game. The difficulty doesn't matter. Select Leech Hunter from the main menu, then click start, and you'll be playing after you hear the mysterious guy (James Marcus) laugh.
The player must find 100 Leech Charms spread throughout the Umbrella Corporation Management Training Facility as both Rebecca Chambers and Billy Coen. There are 50 Green Charms for Rebecca and 50 Blue Charms for Billy. Therefore, they cannot be exchanged. Once the player picks up a charm (10 for each slot) it cannot be dropped. The weapons in the game are also spread out. There's a catch, though: So are the enemies! Also, probably to increase the tension, when the player's total leech count nears 100, some rooms become flooded with creatures, even those rooms that have already been cleared out! To end the game and cash in the leeches, walk out the front doors of the facility. When a character is killed, the game ends and only the surviving character's charm count is accounted for. The prizes are listed below.
1. You should for no reason need to enter the western wing of the first floor. There are no gems inside
and you take more of a chance being damaged by the Leech Zombies inside.
2. Use your medical options wisely, if you have Billy don't run and heal
right when he dips into caution, try and make more progress for healing.
3. This guide is most effective when trying to kill all zombies before you
begin collecting gems, when you get around 97 or 98 certain areas will be
refilled, take note of this as you progress through the walkthrough.
4. This guide is based around you getting the magnum, for this you should have Billy in the
Suit and Rebecca in the skater outfit. At the begining you should see a green and blue herb.
5. When you start the Leech Hunter game, split Billy and Rebecca up, and switch to Billy. You should do this because Billy can take alot of damage, way more than Rebecca. Do not grab any leeches yet, save all that for last.
6. Go to the sewer and grab the shotgun and shells, then go up the ladder at the side, to the train wreck, kill all the hunters, and without picking anything up, go back to the start and start from the place you think are the hardest to get through, and kill the strongest monsters, and only the monsters that get in your way, to save ammo.
7. After going room by room, killing the monsters that you need to kill, go to Rebecca and partner up with her. THEN grab the leeches, you'll have a much easier time navigating through the game, without any monsters.
8. Kill ALL the enemies before even attempting to grab 1 leech.
9. Despite what most people think, this game is MUCH easier if both Billy and Becky are taken along with you. With both characters there, you can tear up a whole room easy,manage yor weapons/item slots,etc.
10. Knowing when to heal your characters is important. If Billy drops to caution, try to make some more progess before administering health. However, the second Becky drops to caution, HEAL HER. She is extremely weak and could die easily. This makes it important to control her so you may try to keep her out of trouble.
11. In some cases, split up.
12. Keep your partner on attack during this game, so that they can provide cover fire for you. It's a pain to get attacked by all sides and get bitten in the ass.
13. The costumes that you select for your characters greatly differs the layout of the game. There are 6 different variations of the game but this guide is based on the easiest. I might add more later on, though. Two outfit sets will give you some cool weapons, the SMG or Magnum.
Light green - items
Red - enemies
--Property of Resident Evil Umbrella
At the start of the game. The game is randomly set up, and is noted by the first few screen shots before you have control. To do the best set up will have two green herbs at the bottom of the staircase. This set up is based on what strong gun you'll get later on: magnum or submachine gun. We're going for the submachine gun. Now let's get started shall we?
The first thing to do is visit the 1F west wing. There are no leech charms in that area so don't bother killing the two leech zombies. Take the items you see here.
Make Billy the lead character and give his first Aid spray to Rebecca. Then separate from her and enter the west hallway.
Run around the corner and enter the first door you see. Once inside the bathroom, dash for the submachine gun ammo clip on the sink, then turn and quickly run past the transforming leech man to grab some handgun bullets from one of the stalls. Then run out of the bathroom before the leech zombie can do anything to you.
Back out in the hallway, continue down the remainder of the corridor and run past another transforming leech man into the projection room.
Here, pick up the two green herbs and the blue herb then exit the room and run all the way back down the corridor to the main hall before the second leech zombie can inflict any damage.
Back in the main hall, team up. Have Rebecca drop a first aid spray, then give her all the health items you picked up. Have her make a blue-green mix and drop it in front of the stairs where Marcus's portrait used to be. Also leave the submachine gun clip here. Billy should now have Handgun and ammo, and Rebecca should have Handgun and ammo, a first aid spray, and a green herb. Now exit this main hallway through the floor passage to the sewer.
Pick up the shotgun shells lying in the water with Billy. Then pick up the shotgun right next to them. It's invisible, but there. Return to the main hall.
Enter the door to the dining room and take out the zombies with the handguns.
Now exit through the north door to the back hall of the boiler room area with both characters. There are two zombies lying on the floor here. Kill them off in your own way. I perfer to play with the guns. Don't enter the door here. There would be hunters in the dark room. Instead, go down the stairs, through the door to the animal puzzle room.
Equip the shotgun. There are two hunters here, but they're both waiting in corridors and won't attack until you enter them. The first is in the area in the room you gained access after you solved the animal puzzle. As soon as you step in, the hunter will run or jump at you. Blast it away with the shotgun, then shoot it with both characters until it dies.
The other hunter is in the corridor of the room where you ran just before you rescued Rebecca in the main game. Repeat the exact same method on it.
After both hunters are dead, equip the handgun enter the first door on your right. Use both characters to take all the zombies out in here. There's a grenade launcher lying on the bed loaded with 30 acid grenades. There are also two red herbs in here.
Now let's reorganize your inventory spaces. Leave the grenade launcher for now and have Rebecca split up and take the two red herbs. If you still have a green herb with you, combine it with a red one. Exit the room.
Grab the first aid spray in the hall. Take all this stuff back to the main hallway, use the green herbs in front of the stairs to mix your remaining red herbs. Then go back and team up with Billy.
Take back the grenade launcher and exit.
Go into the other door in this corridor to the sleeping quarters.
Shoot down all the zombies here as quickly as possible. One rises very close to the door, and there's a good chance one of your character will get grabbed. Rebecca should shoot the zombie off quickly to prevent major damage. You don't need to take the blue herb now, but be mindful that it's here, just in case if you get poisoned, which a possiblity is coming up.
Now go back to the north corridor of the animal puzzle room and enter the wooden door at the end to the hole room.
Shoot off the zombie to the character's left, (right side of the screen). Once the other two zombies stand up and get close, equip the shotgun, aim up, and blow their freaking heads off. If you're lucky, you'll decapitate both with a single shot. Switch back to the handgun and quickly put down any zombies around.
Now we're going to go through the metal door. There's giant spiders in this cooridor. I hate spiders of all sizes! I pefer to kill the bastards, just so I don't have to put up with them later on. After that, go in the first door in the corridor on your right.
Fire at the plague crawlers with the shotgun. The fire key should also be lying next to the green herb. Take it. Exit the room.
If you got poisoned by the spiders, use the blue herb in the sleeping quarters (I told you to be mindful of that). You can also use the green herb there if you didn't already. Return to the dining room.
Use the fire key to unlock the kitchen, but don't enter the kitchen right now because there are no enemies there, just items. Instead, return to the main hallway.
Drop the fire key off in the conference room through the double doors then come back. If you have injuries and still have a green herb here, use it. Make sure each character has a full-heal to prepare for Eliminators ahead.
Go down the stairs behind the portrait into B1F. Use the acid rounds to kill all the giant spiders down here. You are going to want to kill these bastards even if you don't hate them like I do, because there are leech charms down here you're going to want it cleared off to pick up later. Return to the main hall.
If you were poisoned, use the green-blue mix waiting here. If you're unharmed, then continue forwards. Go to the very end of the corridor and enter the wooden door.
Two eliminators will need to be dealt with. Blast them with a shotgun. After that, enter the pillar room.
There are 3 eliminators. If you run out of shotgun shells, finish them with the handgun. After they're dead, take stock of what you have. If you have very low to no ammo for the shotgun, discard it. Otherwise, keep it. Heal if any major damage was taken. Take the Sub-Machine Gun lying beside the pillar. If you're running low on inventory space, give Rebecca his full-heal. Don't waste the Submachine gun ammo on zombies, but on hunters.
Exit back into the spider hall and go into the other door here. Both characters should be using the handgun. Kill off the zombies in here. Enter the other door here to the torture room.
The hunters in here go down very quickly with the Submachine gun. Try not to waste any ammo by accident while the hunters are going through a lengthy death. There is a shotgun and shotgun shells in this room, ignore them for now.
Head back to the main hall and go through the first door on the second floor into the right. This is the room where you fought off the Centurion Centipede in the main game. Enter the door in this corridor into the painting room.
If you still have shotgun ammo, kill off the two plague crawlers here, with your other character assisting with the handgun. Don't discard the shotgun, if you still have it, because it's pointless.
Return to the main hall and re-organize your inventories. You're only going to need a single full-heal with you from now on. Pick up the Submachine gun clip you left here.
Enter the 2F conference room and pick up the fire key you left here earlier. After you are down to at least 50% ammo left in the Submachine gun, combine the clip with the gun. Equip Billy with the SMG and Rebecca with the handgun, and enter the door where the knights would of blocked in the main game of the conference room.
In this hallway blast away the hunters with the Submachine gun. Once it's dead, equip the handgun and enter the far door to the infirmary as a team.
Take out all the zombies with handguns. Don't reload your handgun afterwards. Instead, dump whichever one has least ammo and pick up the custom handgun. Give Billy the custom handgun, and give the other one to Rebecca and have her equip that. Exit and go back to the conference room.
Equip the Submachine gun again. This time take the other door on the west side of the room. There are more hunters here, so blast them away like any other time. Once they're all dead, go all the way down the hall and use the fire key to open the red door, then discard it.
Inside the next room, there are a few zombies lying on the floor playing dead. Shoot them all with the custom handgun, except for one. When you get to the push-able desk climb over it instead of pushing it. The zombie lying on the other side has his head under the desk and won't hurt you. So don't move the desk and don't waste bullets on him. Kill off the rest.
Exit the room and now enter the double doors halfway down the corridor into the study.
Kill off the zombies with the handgun and then proceed into the small library through the door that would require you to light a candle in the main game.
As you enter the library, keep back on the controler, because a zombie on the floor will automatically grab you. Shoot all the zombies dead with the handguns, including the annoying guy on the floor. Search the slumped body for some handgun bullets, then exit.
Head back to the second floor of the main hallway and enter the one remaining door here on the east side.
Handgun all the zombies to death, which shouldn't be hard as a team, then return to the first floor of the main hall. Heal as much as you need to, and there are more herbs to come. You can continue to bring one with you if you wish.
Equip the Submachine Gun and go east through the dining room and into the back corridor as a team. We're finally going to enter the very dark room here.
Inside are a few hunters. Take them out with the Submachine gun from the entrance. Equip Billy with the custom handgun and Rebecca still with her handgun and climb the ladder.
Several zombies occupy the balcony, but they're slow and far apart. Easily pick them off with the handgun. After you keep them dead, run around the path and enter the door at the end to the conference room once again. Exit back to the main hallway.
Enter the door on the second floor to the right and go up the stairs to the area where you beat the giant centiped in the main game.
There are a few plague crawlers waiting up in the breeding room. Kill them with the handgun until they're all dead, then head towards the door that the knights would of been blocking in the main game to the observatory.
In the observatory and kill the zombie on the upper level with the handgun. Run around to the ladder and do the same to the two zombies standing at the bottom. After you killed them, head down. There is still a zombie lying here.
Now head back to the breeding room and go down the stairs and through the door to the left.
Back in the painting room, which we already cleared, then equip the grenade launcher go through the blue door. You don't need the water key to access this door like in the main game.
There's a leech man waiting for you in the corridor. Wait for it to transform, then kill it, but when it starts to inflate, enter any door just to keep it from blowing up in your face, thus injuring you. If you have to take a door to run into to prevent being splattered with leeches, take the second door into the piano room, because this is where you're going now anyway.
In here there are more zombies playing dead, so just shoot them all with the handgun and pick up the red-green mix lying on the floor. Then exit back to the corridor.
Enter the last door at the end of the corridor, where another leech zombie is waiting. Wait for him to transform again and finish him of and like before, when it starts to inflate, just run out a door and back in.
Equip the Submachine gun and the handgun, and go back into the hall where you just killed the final leech man.
Enter the green metal door. Use the Submachine gun to take out the hunters waiting inside. There's another grenade launcher in here, but it's only loaded with 2 regular grenades, so ignore it unless you are in need of it because of the amount of ammo in the one you've had with you. Head out to the previous hallway.
Enter the other door here.
Use the handgun and shoot down all the zombies in the workshop. After you're done, backtrack all the way to the main hallway.
Well, now we're practically done taking out all the enemies, except for one last area. Go down the floor passage, through the sewage tunnel and through the door at the end to the train wreckage room
There are five hunters there. If you have any decent amount of Submachine gun ammo or grenade launcher grenades, then go ahead and get to business here. Equip the Submachine gun and use it on the hunters.
Once you're finished cleaning up the mess of enemies, heal up if you need to, then go back to the main hallway and drop everything you have besides the handguns. Now you're now ready to collect all the leech charms. It doesn't matter what order you visit the rooms in, so I can't walk you through it. However, once you get into the 90th leech charm range, a few rooms do contain enemies again. To avoid this is to simply visit these rooms before you've accumulated too many leech charms. Saving the main hallway and conference room for last also helps. For your convenience, here is a list of rooms in which monsters may re-spawn:
The B3F room where you found the fire key
The 2F room with the fireplace, on the east side of the main hallway
The 2F balcony that connects to the conference room
Both corridors connecting to the west side of the conference room
The kitchen off of the dining room
The room adjoining the torture room to the B1F spider corridor
As long as you visit those areas early on, you won't encounter any enemies. Also remember that there are no leech charms in the first floor west corridor or in the control room right next to the blue door, so don't bother with those areas. They're full of leech zombies. Always travel as a team when picking up leech charms, since Billy can only pick up blue ones and Rebecca can only pick up green ones.
You wouldn't want to miss one in a room and then have to look around at the end, with monsters crawling around certain areas again. When you have them all, just exit the facility through the front doors and claim your prize!
Here's the checklist and tips to avoid missing leeches that are easy to miss by not taking some extra actions:
Behind the bookcase in the library. Push it aside using Billy's strength.
On the lift used to send Rebecca up to the 3rd floor in the main game
A few around the edges of the kitchen; on countertops, in sinks.
Right next to the locked door on the south side of the Breeding Room
Main hallway 1F, 2F - 5
1F Dining Room - 2
1F Kitchen - 7
1F Boiler Room - 3
1F Dark Room room with ladder up to balcony - 2
2F Crow Room - 2
2F Room with Fireplace on the east side of the main hallway - 4
2F Conference Room - 4
2F Corridor through the knight door in the conference room - 5
2F Infirmary where the custom handgun was in this mini-game - 1
2F Corridor with the red door at the end - 8
2F Study where you lift Rebecca to the 3rd floor in main game - 5
2F Library - 3
2F Red Door Room that required the fire key - 4
2F Balcony - 6
2F Painting Room with the Blue Door Room - 3
2F Piano Room - 3
2F Workshop where the vice handle was in main game - 4
2F Test Room where the 2nd grenade launcher was in this mini-game - 2
3F Large Room where you fought the Centurion Centipede nin the main game - 3
3F Observatory - 4
B1F Spider Corridor - 4
B1F Pillar Room where the Submachine Gun was - 1
B1F Torture Room - 2
B1F Train Wreckage Room - 1
B2F Hole Room where you rescued Rebecca in main game - 3
B2F Study where the 1st grenade launcher was in this mini-game - 3
B2F Sleeping Quarters - 2
B3F Water Room where you got the fire key in this mini-game - 3
B3F Gun Room - 1
Total count: 100
A - 100 Leech Charms - Unlimited Ammo for All Weapons
B - 90-99 Leech Charms - Magnum Revolver in Room 201 of Train
C - 60-89 Leech Charms - Unlimited Hunting Gun Ammo
D - 30-59 Leech Charms - Unlimited Handgun Ammo
E - 1-29 Leech Charms - More Submachine Gun Ammo found throughout the game