Lizard

Location: After the turnstiles in the Alternate School.

Attack Method: The lizard has two main attack methods - firstly, it'll try and knock you off balance with its head. Then, once injured, it'll get aggressive and start moving with more speed in an attempt to devour you.

Weakness: It's head.

Best Tactics: Firstly, run around the room and wait for the lizard to start coming towards you. Shoot it several times in the head before running off and repeating the technique again. When it begins to open its mouth to devour you, fire off some shots into the lizard's mouth. If you have room behind you, avoid being eaten by walking backwards, making sure to keep your finger on that trigger.

Larva

Location: Shopping Mall, Alternate Silent Hill.

Attack Method: Disappearing underground, the Larva Boss will re-emerge close to you and omit poisonous cloud into your face.

Weakness: Again, shoot at this Boss' head to finish it off.

Best Tactics: The Rifle is there for a reason. Use it! Move onto the metal grating in the room - this will stop the Larva surfacing close enough to hit you. As soon as you hear it's telltale rumble, hit R1 or L1 to move to the side - you'll be out of harm's way, but close enough to inflict some damage with your firearm. Don't forget to aim for the head - anywhere else is just a waste of valuable ammunition.

Moth

Location: Opposite Alchemilla Hospital, climb the metallic staircase to the roof.

Attack Method: This Boss has two dangerous attack methods; first it'll spray a deadly cloud of venom in your face, then it'll fly into you, giving you a hefty whack and knocking you off balance.

Weakness: It's not particularly fast and reasonable easy to avoid.

Best Tactics: This depends upon your supplies. If you have loads of ammo and health drinks to spare, just stand there and fire off shots as quickly and as accurately as you can and you'll soon finish it off. If ammo supplies are low, keep moving until the Moth has let off its poison cloud. Turn immediately, fire off a couple of shots, then get moving again - only this time in the other direction. Although this is more time-consuming, it will save your supplies.

Demon Cybil

Location: Lakeside Amusement Park, Alternate Silent Hill.

Attack Method: Her cop-issued firearm can finish you with two shots.

Weakness: She's slow, unstable and takes a while to reload her weapon.

Best Tactics: Shoot at her with one of your stronger firearms from a distance, making use of your L1 and R1 buttons to avoid her fire. When she stops to reload, run forward and empty as many bullets into her as possible. Repeat this as many times as necessary.
If you wish to use the unknown liquid and conclude the battle without killing Cybil, wait until she stops to reload before approaching her.
Remember, she only has to hit you twice and you're dead - so top up your health as soon as you're hit.

Winged Demon / Alessa

Location: After the Child's Room in Nowhere.

Attack Method: With two main attack methods, this Demon can finish you off quickly if you don't keep an eye on your life gauge. It'll either fire at you with a strong energy blast or shoot several lightening strikes your way.

Weakness: The attack methods are predictable, and the Demon stays routed to the same spot, which makes it easier for you to avoid its blasts.

Best Tactics: Don't even try to use a melee weapon. Equip the strongest firearm you have and chose one of the following three options:

Technique One:
As soon as the battle begins, fire off as many Rifle rounds at the Winged Demon as you can before it starts warming up with its electrical blast. Then start running around in a big circle, remembering to keep moving and avoiding any of its strikes. As soon as it lets off a blast, stop, fire once or twice, then get running again.

Technique Two:
Only try this if your ammo and health supplies are good. If you have lots of health, try the technique you used to dispense of the Moth. Use your Rifle or Shotgun and fire at close-range, remembering to knock back a health drink after each hit from the Demon.

Technique Three:
This is the non-violent solution to the battle
Before you go through the door in the Child's Room in Nowhere, get out your firearms and use up all your firearm ammunition.
Enter the arena, and the battle will commence as usual. Select your Handgun, Shotgun and Rifle and fire once using each gun to show that you're out of ammo. Then just keep running. If you avoid two consecutive hits from the Boss, the Winged Demon will collapse to the floor and the battle is over.