Author note: Written by Jachin, a 23-year Resident Evil series fan based in Seoul, South Korea. This guide is based on 6 full RE9 playthroughs on PS5 and Steam (Casual → Insanity → NG+ Insanity completions). All strategies, timings, and locations have been personally tested across the v1.02 patch. AI tools were used only for grammar review and note organization; no AI-generated content appears in strategy analysis.
Verified on: v1.02 + DLC patch · Last reviewed: May 30, 2026 · About the author · Editorial policies
The Knife-Only Build is the franchise’s hardest player-imposed challenge. Mortal Edge is your only weapon. No firearms. Built on parry mastery. Knife Edge charm (+30% damage) is mandatory. Insanity NG+ achievable but requires 100% parry precision.
| Slot | Pick |
|---|---|
| Primary weapon | Mortal Edge (only) |
| Secondary | None — no firearms allowed |
| Charm 1 | Knife Edge (+30% damage) |
| Charm 2 | Iron Skin (close combat defense) |
| Charm 3 | Phoenix Down (revive once) |
| NG+ Charm 4 | Survivor’s Will (herbs +50%) |
| Item | Maximum herbs (no ammo carried) |
| Best chapter | Knife-only Blister Borne kill (Chapter 2 — unlocks Predator) |
This build is balanced for its specific playstyle. Each component serves a clear purpose — weapons handle damage output, charms enhance survivability or efficiency, and items provide specialized utility.
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