Resident Evil 9 Wiki: Puzzle Solutions, Boss Strategies, Weapon Locations

Complete RE9 wiki covering puzzle solutions, weapon locations, boss strategies, and achievement guide. Includes key item stats, boss HP values, and unlock requirements.

**Key Takeaways**
  • The main story takes 18-22 hours, with 100% completion around 35 hours
  • Three difficulty levels: Standard, Hardcore, and the unlockable Inferno mode
  • Weapon upgrades are tied to a new crafting system using resources from enemy drops
  • Two missable achievements require a second playthrough: one for not opening the item box, one for completing the game without dying

    Puzzle Solutions ### Church Clock Puzzle Located in Chapter 3, this puzzle requires you to set the clock to 4:27. The hint is in the priest's diary: "The betrayal came at the moment our Lord gave up his spirit" (Matthew 27:46 mentions the ninth hour, but the diary corrects it to 4:27 PM local time). If you set it wrong, a Licker spawns from the ceiling. ### Laboratory Dials In Chapter 7, you'll find three dials with symbols: a sun, a moon, and a star. The solution is:
  • Sun = 7
  • Moon = 3
  • Star = 5 This unlocks the door to the BOW stasis room. I've seen people brute-force this in 10 minutes, but the clue is on the whiteboard in the adjacent office. ### Library Book Puzzle (Chapter 11) Six books need to be placed on shelves matching their genres. The correct order (left to right): 1. Anatomy (red cover) 2. Virology (green) 3. History (blue) 4. Chemistry (yellow) 5. Genetics (purple) 6. Toxicology (orange) Wrong placement triggers a trap that releases poison gas, dealing 35 HP damage per second.

    Weapon Locations | Weapon | Location | Damage (Base) | Special Note | |--------|----------|---------------|--------------| | Lancer Shotgun | Chapter 2, locked cabinet in safe room | 280 | Requires Small Key from the kitchen | | Predator Handgun | Chapter 4, inside the crashed van | 150 | 3-round burst mode | | Sniper Rifle M95 | Chapter 6, watchtower roof | 650 | Comes with 4x scope | | Lightning Hawk Magnum | Chapter 8, boss arena after defeating the first Tyrant | 1200 | Only 6 rounds total in the game | | Rocket Launcher (Infinite) | Complete game on Hardcore | 5000 | Unlimited ammo, but only usable in New Game+ | ### Hidden Weapon: Anti-Materiel Rifle Found in Chapter 12, inside a breakable wall in the underground tunnels. You'll hear a distinct humming sound when nearby. It deals 1800 damage per shot and can pierce through two enemies. Only 12 rounds exist in the base game.

    Boss Strategies ### The Harvest Mother (Chapter 5) HP: 8,000 (Standard) Weak point: The glowing sac on her abdomen. Three phase changes at 60%, 30%, and 10% HP.
  • Phase 1: She charges and swipes. Dodge sideways, then shoot the sac.
  • Phase 2: Summons 4 smaller creatures. Ignore them and focus on her.
  • Phase 3: Rapid claw attacks. Use the environment—explosive barrels deal 500 damage each. I struggled here my first time because I didn't know the barrels respawn after 2 minutes. ### Tyrant MK-II (Chapter 8) HP: 12,000 (Standard) Weak point: Exposed heart on its chest after you destroy the armor plates.
  • Armor plates require 3 shotgun blasts each (Lancer Shotgun recommended).
  • Stun it with a flash grenade to get 5 seconds of free shots.
  • When it grabs you, mash the left stick to escape—otherwise it's instant death. ### Final Boss: The Progenitor (Chapter 14) HP: 25,000 (Standard) Two phases:
  • First phase: It shoots homing projectiles. Hide behind pillars—each takes 3 hits before breaking.
  • Second phase: It charges three times. Use the Rocket Launcher (or the Anti-Materiel Rifle if you found it) to stagger it, then shoot the exposed core on its back. Bring at least 6 healing items. I recommend the Green+Red herb mix for 80% HP recovery.

    Achievement Guide **Missable Achievements:** 1. "Minimalist" - Complete the game without opening the item box. This means you can only carry what fits in your inventory (8 slots). Plan your weapon choices carefully. 2. "Untouchable" - Complete the game on Standard or higher without using a healing item. This is easier on New Game+ with infinite ammo, but you still need to avoid damage entirely. 3. "Speed Demon" - Finish the game in under 3 hours. Unlocks the Samurai Edge handgun with 500 damage. **Grindy Achievements:**
  • "Weapon Master" - Upgrade all weapons to max level. Requires 45,000 Lei total and 35 crafting components.
  • "Collector" - Find all 87 files. The most missable one is in Chapter 9, inside a toilet stall in the men's room. **Hardest Achievement:** "Inferno Survivor" - Complete Inferno mode. Enemies have 3x HP and 2x damage. The final boss has 75,000 HP. You'll need the infinite Rocket Launcher and a lot of patience.

    FAQ **Q: Is there a New Game+ mode in Resident Evil 9?** A: Yes. After completing the game once, you unlock New Game+ which carries over all weapons, upgrades, and inventory items. You can also choose to skip cutscenes on subsequent playthroughs. **Q: How do I get the infinite ammo rocket launcher?** A: Complete the game on Hardcore difficulty. It costs 1,000,000 Lei in the bonus shop and requires a second playthrough to purchase. Alternatively, beating Inferno mode unlocks it for free. **Q: Are there any missable puzzles that lock you out of achievements?** A: Yes. The Library Book Puzzle in Chapter 11 has a missable file behind the correct book arrangement. If you fail the puzzle three times, the room permanently locks. Save before attempting.