Place the X-ray of Clark in the left space, and the Gail Holland in the right. If you get them backwards, you can easily switch them while they are on display. Return to the entrance and flip the switch on the wall. The red light reveals highlighted organs on the X-Rays. If you placed them correctly, you'll see the organs highlighted in this order: the Colon, the Esophagus, the Liver, and then the Lungs. If you take the first letter of each word, you spell "CELL." Keep this in mind as you continue.
Head back out into the central square and into the double doors on the upper-northeast corner of the square. In this room, you'll find the V-ACT Researcher's Note, a Flash Grenade, and a First Aid Kit. Access the computer and login as JOHN with the password ADA. Unlock the door on B3F, and then you'll need another password in order to unlock the Visual Data Room, which we just found out was "CELL." Once you've unlocked the doors, log off and head back to the central square area and back to the hallway with the X-Ray room.
You'll notice at the very end of the hallway there's an electronically locked door that has three levers on the right side. In order to open the door you'll need the three MO Disks and you'll have to use them on the MO Disk readers scattered throughout the laboratory. The door leads to the jail cell where your friend Jill is waiting to be rescued. You don't need to use the MO Disks in order to beat the game, but if you want the best possible ending, then you'll need to save Jill.
Enter the room you've just unlocked on the right side of the hallway. You'll encounter a naked zombie (Normal/Hard). Kill it and pick up the Slide Filter and the FAX file. There is also an ink ribbon in the sink on Easy. There is a MO Disk Reader in here where you can use one of the MO Disks. A refueling device for the nitro compound is also in here but that you'll get to later. For now take the Slide Filter and head back up the stairs and to the Visual Data Room. A MO Disk lies on the desk at the end of the hallway past the Visual Data Room.
Enter the Visual Data Room, you'll find a First Aid Spray on the table, and a MO Disk on the shelves on Chris's left. Also on the left side you'll find a key code panel that requires a 4-digit code, which you'll now find out. Go to the slideshow projector and use the Slide Filter. View the slideshow, and on the last slide you'll find the digits "8462." Enter the code into the code panel and the door will open to the Editing Room where you can get the Laboratory Key and watch Kenneth's film if you so desire. Now you have the Laboratory Key, head downstairs and unlock the two doors on the south-east end of the central square, and discard the key.
First, make sure you have a MO Disk (if you wish to save Jill) and your Shotgun before you enter the room on the left. You'll encounter some Chimeras. Push the shelf forward, and enter the ventilation Shaft, then immediately head through the ventilation Shaft on the left before you get plastered by the Chimeras. You'll end up in the morgue and you'll find a MO Disk reader where you can use another MO Disk. You'll more than likely encounter a couple Chimeras, unless you're really fast. A Chimera will jump out of the ventilation shaft if you try to leave the room through the exit after placing the MO Disk, to prevent that from happening, simply turn around and go back through the ventilation shaft.
Push the shelf forward and head back out into the central area, you can find shotgun shells in the shelf if you're playing on hard difficulty. Then head through the other door you unlocked with the Laboratory Key. In this T-shaped hallway, make sure you kill the naked zombies (Normal/Hard), especially the one on your right before you continue. On the north side of the hallway you'll find a large elevator that doesn't work because it needs to be powered up. On the south side of the corridor, you'll see a large door that leads to the boiler room where you'll surely find Chimeras everywhere. But for now head through the small door in the middle and enter the Safe Room. Grab the ink Ribbon, First Aid Spray, and Shotgun shells.
IT IS HIGHLY RECOMMENDED THAT YOU SAVE YOUR GAME AT THIS POINT; THE TASK YOU'RE ABOUT TO ATTEMPT IS VERY TRICKY AND CAN RESULT IN A SUDDEN AND EXPLOSIVE DEATH!
Make sure you're equipped with the Shotgun and head into the boiler room. As soon as you enter, head immediately to your right and kill the Chimera to prevent it from interfering with your next task, one shot from the Magnum will kill it. Take the empty Fuel Supply Capsule and head back to the room with the refueling device on the northern side of the laboratory. Your task is to fuel the capsule with the Nitro compound and get it back to the boiler room so you can get power to the elevator without running or being stuck by a zombie or Chimera! Use the empty Fuel Supply Capsule on the refueling device and you now have a Fuel Supply Capsule filled with nitro compound, which could result in a fatal explosion if disturbed! Don't go to your inventory screen to do this, just press the action button.
CHANCES OF NITRO EXPLOSION
-Firing a powerful weapon (Shotgun, Magnum, Rocket Launcher) carries a 25% chance of explosion
-Getting caught in the explosion of your own Flash Grenade has a 20% chance of explosion
-When a zombie grabs you, there is a 30% chance of explosion
-When a chimera grabs you, there is a 20% chance of explosion
-When you are running, the Nitro randomly explodes after 1 to 3 seconds in Hard mode, 2 to 4 seconds in Normal mode, and 4 to 6 seconds in Easy mode
Place the Capsule back into the machine in the boiler room and breathe a deep sigh of relief. Run around and evade the chimeras and enter the door on the south end. Make sure you have a MO Disk because you'll find the third and final MO Disk Reader in the next room straight ahead from the door. Use your heavy weapon against the chimeras before you attempt to use the MO Disk Reader since you'll encounter several of them. When you're done keep heading south and you'll find another door to enter. You're now in the room with the Triggering System. Go over to the computer and activate the power to the elevator. You are now ready to face the final boss! Head back north until you get back to the T-shaped corridor, enter the Safe Room on the right. Save your progress and equip yourself with some health items and your best weapon (along with ammo Magnum, Shotgun). Head to the large elevator and activate the switch on the right. If you saved Rebecca, you'll see a cut-scene and she will catch up and head down to the B4F Laboratory with you. If you didn't, head down the elevator.
