Saving A.R. ammunition
When you are low on ammunition, go to a nearby storage system and take out A.S. rounds. Combine it with the A.R. and put the rounds back into storage. You will be restored and still have space for more items.
Saving shotgun ammunition
Wait for a zombie to get close, then aim up and you will shoot him in the head, killing him with one shot.
Wait for two zombies to line up close to each other. Then, aim up and fire to shoot both their heads off. Note: This may require some practice.
Sneak past monsters
If you can walk behind a monster, keep tapping "Run" quickly. Jill will not make any sound of footsteps and seems to "glide". The monsters cannot hear you and subsequently will not turn around and attack. Note: This works best with the Drain Deimos.
Additional slots
When you first get to the trolley, Carlos will give you a "fanny" pack. After you finish the game, you will keep those additional two slots in the game.
Starting the trolley
The oil additive needed to start the trolley is located in a locked store room inside the sales office. To unlock it, pick up the flashy remote on a desk to turn on a TV. You will see a commercial about some product from Ubrella Corp. Make note of that product (Safsprin, Adravil, Aquacure, etc.). Go to the nearby computer where Carlos just shot his zombied friend. You will be prompted for a password. Type in the name of the product to unlocked the storeroom.
Fighting Nemesis
The Nemesis is left-handed and uses that hand to grab you. When fighting him, shoot him two times and run past his right side. Shoot twice and repeat the process. Note: This only works when he does not have his Rocket Launcher and if you are using the handgun.
To defeat Nemesis in mercenary mode, choose Mikhail. He has the hardest and best weapons. Before you reach the bar, you will hear footsteps and two Nemesis with rocket launchers will appear. Equip your launcher and aim it at Nemesis. The first shot will knock them down, then fire at the second one. You can now do one of things; run (be careful as the first Nemesis will be getting to its feet, or fight it out. If you choose to fight, wait until Nemesis stands and shoot him. You will get 20 seconds when you shoot them the second time.
In easy mode, if Nemesis has a rocket launcher use the assault rifle at him. If he aims at you, quickly avoid him. If he does not have a rocket launcher, use the shotgun. Duck when he tries to catch you. When he is holding you, press all buttons as fast as possible because he will kill you. If his body is shaking while he is lying down, it indicates that he is still alive.
In hard mode, use the grenade launcher to defeat him. If he is in the ground, look carefully at his body. If it is shaking it indicates that he is still alive. Shoot him while he is lying down. If you are in a small room, go to a bigger room to run or to defeat him in the larger room (for example, the main hall in the police station or before the entrance to the police station).
If you need some room to fight Nemesis, do the following. When you fight Nemesis in the restaurant/newspaper building, choose to fight him in the restaurant. It is a loss of Carlos' help, but when he appears, hide in the kitchen. After he gets knocked out from the explosion, if in hard mode, take the package(EAGLE Parts B), and run out. After you talk with Carlos, go to the shopping district save point and get ready to fight Nemesis. Bring a handgun. You can now fight him in the area between the city hall gates, newspaper office, and alley. There is a First Aid Spray in the newspaper building and a safe room nearby. You should have enough room to even defeat him with the handgun.
When you must fight Nemesis on the train, instead of fighting him, go back through the door you came in. A short intermission sequence will start.
Nemesis Type 2 in mercenary mode and 220 second bonus
Get to the parking garage, then exit out of the door. If you still have over two minutes left, run to the end of the bus and you will see Nemisis Type 2. He will jump down and come after you. You can run around him to avoid his attacks and save ammo or you can kill him for 220 seconds. Note: This trick best works with Mikhail
Kill regular Nemesis for 60 seconds of bonus time
Knocking him down the first time is worth a 20 second bonus. Knocking him down a second time will cause him to look dead with a pool of blood around him and is worth a 40 second bonus.
Destroy Nemesis' Rocket Launcher
This trick requires a large number of health items and first aid sprays. When you fight the Nemesis with the Rocket Launcher, aim up. If he targets you, run and try to make him waste ammunition. After four to seven shots from him, he will reload, but the rocket launcher will turn red and explode.
When you hear the reload sound he makes with his launcher and he aims at you, shoot him when he is about to shoot you. Almost always, the launcher will backfire and explode.
Loose parts from Nemesis
Whenever you kill Nemesis in Hard Mode, you can always pick up a package that he drops, containing gun parts. Once these are assembled, they form the Eagle 6.0 STI. This gun is more convenient than the standard handgun. Once you get close to a zombie, aim directly at its head and fire. If performed correctly, you will shoot its head off just like what a magnum regularly would, and it only consumes regular handgun bullets.
Help from Nemesis
When in Sub Station, after getting the fuse the game prompts for a live selection. Do not do anything. You will have to kill all the Zombies by yourself. When you get outside, a short intermission sequence will happen. Zombies will attack you, and Nemesis will blow them up with his rocket launcher. However, you are his next target.
Fighting a Doggie
Knock down a Doggie, then aim down and you can fire faster on it. If you do not aim down, you have to wait until the Doggie stands up.
Humanoid sighting
When fighting the Nemesis for the last time in the Rail Gun Room, you will see a figure in the background, similar to Nemesis. Closely observe the creature to see that it is the Humanoid, or the Mutated William Burken from Resident Evil 2 . When you press [Action], Jill describes it as "One of Umbrella's New Biotech Weapons".
Alternate meeting with Carlos
You can meet Carlos at the top floor of the newspaper building instead of the restaurant when you first come out of the area after you fought the first Licker. You will hear Carlos taking out a few zombies. Ignore that and go to Jill's left. Enter the door at that location. You will now be at the alley directly behind the restaurant. From here, make your way to the newspaper office. After meeting Carlos, Nemesis appears. You will get to make a choice to "Jump out the window", or "Hide in the back". Note: To get the green gem, go back to the restaurant and go down the ladder. Then, check the police officer down there. He should have it.
Aqua Hunter caution as Carlos
When you gain control of Carlos, beware of the Aqua Hunters that are in the Artificial Environment tank. When fighting them, keep firing your weapon as much as possible. When they grab you, tap on the buttons as much as you can or they will eat you whole.
The Worm
You actually do not have to fight the Worm the first time you meet him, when you fall into the sewer. After he pops out of the wall the first time, just run to your right and hit the first switch (make sure the worm comes out of the wall). Then, run to the other side of the sewer and hit the second switch (this one may be difficult -- also make sure the worm comes out again). Then, press the button for the ladder and you just saved yourself some life and ammunition.
Defeating the Worm
Use the following trick to defeat the Worm without wasting good ammunition. Walk slightly into the Worm's little section slowly until the screen starts to shake and he appears. Back up to the wall and shoot him with the handgun. If the worm does reach you, which is not very often, Jill will usually dodge to the right. Repeat until it is defeated. To defeat the second Worm, run around for two minutes and try not to take damage. After that time, the light pole will begin to spark. Use the handgun to shoot in the direction of the two sparking poles and they will fall into a puddle. Stand near (not in) the puddle, then wait for the worm to go into the water and fry to death.
Custom shotgun
Play the game under the hard difficulty setting. Defeat Nemesis for the fourth time and pick up the small silver box that he dropped. It will contain M37 Parts A. Defeat Nemesis a fifth time and get the M37 Parts B. Combine these two parts to get a western custom shotgun with six rounds. This gun uses the standard 12 gauge shotgun shells.
Grenade Launcher or Magnum
Your timing will determine whether the Grenade Launcher or the Magnum can be found at the S.T.A.R.S. Office. If you go to the cabinet before the radio goes off, when you try to leave you will get the Grenade Launcher. If you go to the cabinet after the radio goes off you will get the Magnum. Whichever weapon is obtained, the other will be found in the power plant.
Grenade Launcher
Use the S.T.A.R.S Card in the computer in the main entrance of the Police Station. When you get the S.T.A.R.S Emblem Key, go to the S.T.A.R.S Office. When you are in the office, go to the big locker next to the out-of-commission message receiver. Open the locker and you will get a Grenade Launcher.
There are two different ways to get the Grenade launcher. There is one in the Sub-Station when the game is first played. The other is available after the game has been completed once. Go to the S.T.A.R.S. office and go were the Magnum gun was originally obtained.
Rocket launcher
In the dead factory, go to the machine next to the water sample puzzle. Use the facility key where that game states a small plastic card can be inserted. Take the other facility key that is given and go to the steaming room where the small card activated elevator is located .Go down and use the facility key on the door where that game states a small plastic card can be inserted. You will find a rocket launcher with four shots at this location.
STI Eagle handgun
Kill Nemesis two times under the hard difficulty setting to get the two parts for it. Combine them to get the STI Eagle handgun.
Assault rifle with unlimited ammo (hard mode)
Kill Nemesis seven times in your first game and he will drop the assault rifle. Kill him seven times in your second game he will drop an infinite ammo case.
Conserve assault rifle ammunition
Set the mode to "Manual". Every time you shoot, only three rounds will be used and the total percentage of ammo left will decrease by about 1%. Use the assault rifle like this until you can fire it without wasting large amounts of ammunition when it is set to "Auto".
Killing multiple zombies with shotgun
You can easily blast off the heads of multiple zombies with a shotgun. Get some zombies close together. Aim the shotgun up. Get close to the zombies (but not too close). While the shotgun is aimed up, and you are close, fire. Note: This works well for Mikhail in the mercenaries mode.
Get vaccine
When playing as Carlos in the Hospital 4F, go to the unlocked Sickroom and look at the corner where the movable cabinet is located. Remember where it is. Read the note on the dead doctor's hands in that room. Use the Sickroom Key on the next room over. In that room, push the cabinet in the opposite corner of where the cabinet in the previous room was found. For example, if the first cabinet is in the upper left corner of the first sickroom, than push the second cabinet into upper right corner of the second sickroom. A painting in the room will slide, revealing a machine holding the vaccine base. Enter the numbers that were on the dead doctor's note in order to obtain the vaccine base.
Vaccine medium combination
One of the combinations when making the vaccine medium in the hospital is I, III, and A.
Get the S.T.A.R.S. card faster
This trick allows you to get the S.T.A.R.S. card faster without having to go further into the police station and wasting ammo for Jill's card for the computer to get the password to the drawer where the S.T.A.R.S. Room Key is located. After Brad is dead near the entrance of the police station, you have choose between fighting the monster or entering the police station. Choose to fight the monster. When you do this, remember that Nemesis is left handed. When he comes at you, run past his right side and you will not get hurt. You should get near Brad's body so you can check it. If completed; you can grab his card case and dodge Nemesis to enter the doors of the police station. When inside, go into the items menu and check on the card case to get his S.T.A.R.S. card. You can use it on computer for the password for the S.T.A.R.S. Room Key.
Killing Zombies quicker under the hard difficulty setting
If you are using shotgun rounds, wait until the zombie is directly in front of you, then aim up to fire. This will blow their head off, killing them immediately and save one round of shotgun ammo per zombie. If you are using handgun rounds, carry your knife, and only shoot them until they fall. Then, finish them off with the knife.
Getting Mikhail to kill Zombies with the oil drum
Get everything except the oil, then go to the trolley. If you destroyed the oil drum, Mikhail will throw a grenade killing the zombies. But if you did not destroy the oil drum, Mikhail will kick it towards the Zombies and shoot it with his gun, killing them.
Checking zombies
To tell if zombies are still active after they are hit, leave the room. If the zombie is still on the floor, he is still active.
Walk back and forth in front of their head or enable the auto aim feature and press "Aim".
If you are not sure if a zombie or a dead body is present, look for a shadow. If there is a shadow under the corpse, it is still alive. When you see no shadow or when it lies in a pile of blood, it is dead.
If you are not sure if a zombie is dead, walk up fairly close to it (but not so close that they start chewing your ankles) and simply back up. If the Zombie is alive, the character will do a wary backup move instead of the standard backup done when there is nothing there.
Walk past a zombie on the floor. If its head moves to watch you, it is alive.
After you shoot a zombie a couple of times and he falls, check to see if any blood comes from him.
Opening the emergency door
The emergency exit door at the sub-station can not be opened by any means except choosing to open it on the live selection when the zombies attack when you come out of the door.
Stranded zombie
After you put out the fire with the hose (where the first Cerebus dogs appeared) go to the first alley ahead of you. Enter the door and move up so the camera angle changes. To your left will be a row of windows. Look in the first window to see a zombie cop. You cannot shoot him, he cannot attack you, and there is no way into the building that he is in.
Campaign sign
Go to the end of the hall with the save room behind the restaurant to find political campaign signs. Look closely to will see a sign that says "OTOM for U...S Senat".
Locker combination
When entering the Police Station and going into the door in the top left corner, you will reach a room with zombies. After killing them, enter the next room, which contains the lockers. Go to the other side to find a locker with a light on it. The game will prompt for a code. The code (varies by game) is either "0131", "0513", "4011", or "4312".
Park fountain solution
When using the water control unit in Raccoon Park to drain the fountain, you have to align the gray and black gears. The gears need to be moved in the following order to correctly align them and drain the fountain. Move the bottom left black gear up. Move the top center gray gear down. Move the top right gray gear to the left. Move the bottom right black gear up. Move the top center gray gear down. Move the top left black gear to the right.
Water sample solution
When using the water sample machine in the abandoned Waste Processing Plant (Dead Factory), you have align the three lines of the water sample correctly to process the sample. There are four possible solutions (varies by game): A: 4 Right, B: 2 Right, C: 2 Left. A: 1 Right, B: 1 Right, C: 2 Left. A: 1 Left, B: 2 Left, C: 2 Right. A: 1 Right, B: 3 Right, C: 4 Left. This will unlock half of the lock to the door next to the elevator.
Resident Evil 2 references
When going to the trolley, look ahead as you climb the boxes. You can see the truck that crashed in Resident Evil 2 in the opening sequence.
In the room where you fight Nemesis for the last time (the missile room), go to the wall behind the first battery. Tyrant from Resident Evil 2 is caved into the wall. Jill will describe it as "One of Umbrella's deadly bioweapons".
At the end of the game, look closely when the rail gun is getting ready to fire. You can see Mr. X from Resident Evil 2 under it.
Throughout the game, look at your surroundings. You can see multiple things from Resident Evil 2 . In the room where you fight Nemesis the final time you can see Hunk, Mr. X, and the Tyrant. Also, in the street just before the trolley you can see the oil truck that crashed into the police car from Resident Evil 2 .
Hunk
Look around in the room with the rail gun to find Hunk on the ground by the door you would exit through.
More background information
When you face Nicholai with the helicopter, it is better to negotiate with him as you will get more information from the UBCS plans. It is also wiser to talk with him because it wastes ammo and health if you fight him.
Mercenary mode: Nemesis Type 2 and 220 second bonus
Get to the parking garage, then exit out of the door. If you still have over two minutes left, run to the end of the bus and you will see Nemesis Type 2. He will jump down and come after you. You can run around him to avoid his attacks and save ammo or you can kill him for 220 seconds. Note: This trick best works with Mikhail.
Mercenary mode: Extra Nemesis fight
In the parking lot, there will be some zombies. If you do not kill the last two nearest to the door, when you go out in front of the bus you will have to face Nemesis as you did when you were playing as Carlos in the actual game (with all of his tentacles). If you do not stop running, you probably will not have to face him. Note: He only comes down when you go to the viewpoint in which you can see the top of the bus. Also, it is not smart to fight him because it must be done with a rocket launcher and some zombied friends.
Mercenary mode: Save ammunition against Nemesis
When you face Nemesis in the room after the bus (with the other zombies), try to get a zombie between you and Nemesis. Nemesis will not hesitate to attack the zombie to get to you, which takes less bullets to get past that room.
Mercenary mode: Unlimited money and time
Get to the alley that has three dogs and a crate. Kill two of the dogs get on the crate. Continuously dodge the remaining dog for a time and money bonus for dodging.
Mercenary mode: Civilian locations
The civilians that must be saved in mercenaries mode may be found at the following locations. Note: You must save them in this order or some of them will die. Also, You must kill all the enemies in the room with the civilians or they will not be saved.
1. Gas Station
2. Basement of the Restaurant
3. Third Floor of the Raccoon Press Office
4. Sub Station (where you got the fuse)
5. Sales Office
6. The Bar
Mercenary mode: Item box
Once you complete mercenary mode with each character and bought all the weapons you can access the item box, but it only contains a knife.
Mercenary mode: S rank
Get the combat knife, kill many monsters, rescue all civilians, and do not use healing items. Then kill every monster with the knife. You should end up with over an hour and some change.
Mercenary mode: 330 seconds
Go to the part of the mercenary mission with two Nemeses and take out your knife. The Nemeses will kill each other, and you will earn 330 seconds.
Mercenary mode: 78 second bonus
As any character, get to the branched zone, directly after the Raven's nest, You will see a barrel with zombies nearing your position. Just shoot the barrel -- it does not matter if you do not kill all of them. However, the more you kill, the more time you receive. This usually results in a 78 second bonus.
Mercenary mode: 44 second bonus
As Mikhail, go past the city grounds gate and towards the Raccoon City Press. Before you reach the Press building, you will encounter a swarm of zombies. Equip the shotgun and blast away towards the densely occupied areas, thus resulting in a 44 second bonus. If you blast more than that, you will get an additional 22 second bonus. Note: Do not use the 44 second bonus if you are low on ammunition.
Mercenary mode: Larger reward
Try to reach the area near the goal (just after the dimly lit hallway, near the intersection) with more than four minutes remaining on the game clock. Two more of the STARS-killing Nemeses will appear, both armed with makeshift rocket launchers!. This achievement results in a larger reward from the Big Fat Boss.
Mercenary mode: Saving ammunition as Mikhail
When in mercenary mode, it is easy to waste ammunition. The following is a list of guns and the enemies they are most effective against when playing as Mikhail.
Magnum: Hunters
Shotgun: Zombie dogs and zombies
Rocket Launcher: Nemesis
Running past: Crows (especially) and most zombies
Note: If you save the civilian in the third floor of the Raccoon City Press, you will get Shotgun Shells. If you save the civilian in the basement of the restaurant (which is just a cleaner Brad from the beginning of the game) you will get Magnum Bullets. Running past zombies is also a good way to save ammo.
When in mercenary mode, if you are fast enough, you do not have to shoot any crows at all, which in return saves ammo for any gun.
Mercenary mode: Identity of the rewarder
The identity of the fat man who hands out the reward money in mercenary mode is Brian Irons, the police chief. To confirm this, look at his shirt.
Operation Mad Jackal mode: Easy time for Nicolai
Equip the knife, then find a zombie on the ground that will bite your leg. When it does, Nicolai will stomp his head and this will be counted as a knife kill, resulting in +24 seconds.
