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Leeches domain: (Rebecca and Billy) (2)
Resident Evil 0

Leeches domain: (Rebecca and Billy) (2)

Defeat the Leech Infected Marcus boss in Resident Evil 0 using dual magnum power. Find two Shaft keys after the fight.

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Defeat the Leech Infected Marcus boss in Resident Evil 0 using dual magnum power. Find two Shaft keys after the fight.

Walkthrough
  1. 1
    After a cutscene (a non-interactive cinematic the game plays automatically) (an event in the game that advances the story), prepare for a boss fight against the Leech Infected Marcus.
  2. 2
    Damage the boss with all your available ammo.
  3. 3
    Run or retreat if the boss gets too close. Do not let it hit or grab you.
  4. 4
    The boss will mutate further and attempt to grab a character. Your magnum will quickly defeat it and stun it, causing it to release your teammate.
  5. 5
    After defeating the boss, two shining objects will appear: two Shaft keys.
  6. 6
    Explore the area to find some magnum ammo.
  7. 7
    Use the two Shaft keys on the double doors, ensuring you insert them into the correct keyholes as they are different.
  8. 8
    Dump the grenade launcher.
  9. 9
    Enter the double doors.
Tips
  • You have dual magnum power, which is effective for defeating this boss.
  • Remember to collect the magnum ammo found after the boss fight.
  • Pay attention to the different keyholes when using the Shaft keys on the double doors.

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