Boss encounters:

Master every boss encounter in Resident Evil 0! Get expert tips and strategies for defeating the Scorpion, Centurion, Bat, Tyrant, and Leech Queen.

Stats / Weaknesses:

• Scorpion: Weak point is its head.
• Hugh Insect (Centurion): Weak to grenade rounds and cocktails.
• Bat: Weak to acid rounds and shotgun.
• Tyrant (1st & 2nd fight): Weak to shotgun and magnum.
• Leech Infected Marcus: Weak to shotgun, grenade launcher, and magnum.
• Leech Queen: Weak to all available ammo, especially magnum and grenade rounds.

Phases:

1. Scorpion (Train): Focus fire on its head. Dodge its charging attacks when its head is covered.
2. Hugh Insect (Centurion - Training Facility): Use grenade rounds when it grabs Rebecca. Throw cocktails and use the hunting gun. Avoid its body when crawling.
3. Bat (Church): Acid rounds are best initially, followed by the shotgun. Prioritize the main bat; ignore smaller ones.
4. Tyrant (Factory - 1st Fight): Use the "merry-go-round" tactic: shoot, run around it, wait for it to turn, repeat. Aim for its weaker arm. Magnum is a backup.
5. Tyrant (Factory - 2nd Fight): Similar strategy to the first fight. The corridor allows for the "merry-go-round" tactic even if you're hurt. Use the nearby door for healing herbs if necessary.
6. Leech Infected Marcus (Factory): Use all available ammo (shotgun, grenade launcher, magnum). Retreat if necessary. Collect the two Shaft Keys after defeating it.
7. Leech Queen (Factory - Final Boss): This fight has two parts. First, unload all ammo. Second, Billy distracts the Queen while Rebecca turns valves. Protect Rebecca at all costs.

Strategy:

• Scorpion: Start with your handgun (about 10 shots), then switch to the hunting gun. Reloading in your inventory is key. Use First Aid Sprays or Green Herbs if you take heavy damage. Grab the panel opener afterward.
• Hugh Insect (Centurion): When it grabs Rebecca, immediately switch to the grenade launcher and fire all rounds. This will make it release her temporarily. Then, throw two cocktails and finish it off with the hunting gun. If you get hurt, use the "micx" herb (likely a mixed herb).
• Bat: Conserve your acid rounds for this fight. Once they're gone, switch to the shotgun. The "shoot-run-shoot" method is effective. Don't waste ammo on the smaller bats; focus solely on the main boss.
• Tyrant (1st & 2nd Fight): The "merry-go-round" trick is highly recommended. It involves shooting the Tyrant, then running around it to get behind it as it turns. This makes it hard for the Tyrant to hit you. Always run around its weaker arm to avoid taking damage if your timing is off. The magnum is a last resort if you run out of shotgun shells. For the second fight, the narrow corridor still allows this tactic, and a nearby door offers healing herbs.
• Leech Infected Marcus: This is a damage race. Keep firing with your best weapons (grenade launcher, shotgun, magnum). Don't get hit or grabbed. After you defeat it, you'll get two Shaft Keys. Use them on the double doors, ensuring you put them in the correct slots. Heal both characters if they're injured.
• Leech Queen: The first phase is straightforward: just keep shooting. Use your strongest weapons. In the second phase, Billy must protect Rebecca as she turns four valves. Use the handgun to distract the Queen, drawing its attention and attacks towards Billy. This gives Rebecca time to reach and activate each valve. Lure the Queen towards activated valves to create paths for Rebecca. Keep an eye on Billy's health and heal Rebecca if she gets hurt.

Recommended Weapons:

• Scorpion: Handgun, Hunting Gun
• Hugh Insect (Centurion): Hunting Gun, Grenade Rounds, Cocktails
• Bat: Shotgun, Acid Rounds
• Tyrant (1st & 2nd Fight): Shotgun, Magnum
• Leech Infected Marcus: Shotgun, Grenade Launcher, Magnum
• Leech Queen: Handgun, Shotgun, Grenade Launcher, Magnum