I still remember the first 12 times I tried to take on the Oni Ghost of Yotei and got my head bashed in before I could even pull out my purification charm. I wasted hours farming supplies, picking the wrong path up the mountain, and missing obvious tells that the boss was about to unleash its one-hit kill roar. If you’re stuck on this fight too, you’re not alone: it’s one of the hardest optional bosses in the entire Yotei Mountain horror franchise, and it has a 68% first-attempt failure rate according to recent community stats. This guide breaks down every mechanic, trick, and gear pick you need to finally clear the fight without grinding for extra supplies for 3 hours first.
Pre-Fight Prep: Gear and Supplies You Can’t Afford to Skip
You don’t need a fully upgraded inventory to win this fight, but there are a few non-negotiable items you have to grab before you even head up the mountain. First, stock up on at least 3 basic purification charms — you’ll need these for phase 2 of the fight, and you can’t buy them from the lower mountain shop, so make sure you farm them from the lesser spirits in the forest below. Next, pick up the noise dampening powder from the abandoned campground near the mountain entrance; it reduces the range that the oni can hear you by 70%, so you don’t risk triggering the fight early.
You also want to make sure you have either the iron dagger or the stone axe as your primary weapon. Swords look cool, but they have too long of a wind-up time to land quick hits after dodging the oni’s attacks. Don’t bother bringing heavy armor either; it slows you down too much, and almost all of the oni’s attacks will one-shot you even if you have full armor equipped anyway. The only defensive item worth bringing is the jade protection amulet you can find in the small hidden shrine on the east mountain path, which blocks one full oni attack automatically with no input required from you.
Core Mechanics to Master to Beat the Oni Ghost of Yotei
The biggest mistake new players make is running into the fight blind, not knowing the boss’s attack patterns and tells. The oni only has 4 main attacks, and each has a very clear visual cue you can learn to spot in 1 or 2 attempts. First is the overhead club swing: it lifts its club over its right shoulder for 2 full seconds before swinging down, and you can dodge left to avoid it completely. If you dodge right, you’ll still get grazed by the end of the club and lose half your health, so stick to left dodges for this attack.
Second is the charge attack: the oni lowers its head and snorts twice before running straight at you at double its normal movement speed. You can dodge to either side to avoid it, or use your grapple hook to jump over its head if you’re standing too close to a cliff edge and don’t have room to dodge left or right. Third is the instant-kill roar: it tilts its head back for 3 full seconds before roaring, and you have to be hiding behind one of the large stone ritual pillars in the fight arena to survive it. Don’t waste your noise dampening items on the roar, they won’t block the damage even if you use them right before it hits.
The fourth mechanic you need to know is the ghost clones it summons in phase 2. These clones look exactly like the main oni, but they only have 1 health point, and they disappear if you hit them with a purification charm. They’ll swarm you and stun you if you leave them alive for too long, so always take them out before you go back to attacking the main boss.
Phase-by-Phase Fight Walkthrough
Phase 1 starts as soon as you step into the ritual circle at the top of the mountain, when the oni is at 100% to 50% health. It will only use the overhead swing and charge attacks in this phase, no roars or clones. Use this time to get used to its attack timings, don’t try to rush through phase 1 by landing as many hits as possible. I usually only land 1 quick hit with my dagger after every successful dodge, then back off immediately to avoid getting caught by a follow-up attack. You don’t get any extra rewards for beating the fight fast, so take your time here.
Once you get the oni down to 50% health, it will roar and the entire arena will fill with thick fog, marking the start of phase 2. As soon as the fog rolls in, position yourself between two ritual pillars so you have cover for the next roar attack. The oni will summon 2 ghost clones every 45 seconds in this phase, and it will use the instant-kill roar every 90 seconds. Take out the clones first with your purification charms, then land 2 to 3 hits with your axe before backing off to wait for the next attack pattern.
When you get the oni down to 10% health, it will enter phase 3, where it moves twice as fast and its club swings have no wind-up time. You can’t damage it with regular weapons in this phase, so you have to use the ritual knife you picked up from the top of the mountain shrine. Wait for it to lunge at you, dodge to the side, then stab it in the chest to stun it for 3 seconds, then land 2 more stabs to finish it off. There are a few common mistakes that get 90% of players killed in this fight, so keep these rules in mind:
- Don’t use all your purification charms in phase 1, you’ll have no way to take out the phase 2 clones quickly
- Don’t stand in open ground during phase 2, the roar attack will kill you before you can reach cover
- Don’t try to run away from the phase 3 charge, it’s faster than you and will catch up in 2 seconds flat
Post-Fight Rewards You Don’t Want to Miss
A lot of players skip this fight because it’s harder than the main story boss, but the rewards are 100% worth the effort, even if you only beat it once. First, if you beat the oni without taking any damage at all, you unlock the Oni Club Weapon Skin that does double damage to all spirit enemies for the rest of your playthrough. That’s the most powerful melee weapon in the entire game, and it makes the final main story boss fight feel like a total joke.
Even if you take damage during the fight, you still get 5000 essence (the game’s main currency), 3 rare purification charms, and the mountain fast travel perk that lets you teleport between any shrine on Yotei Mountain whenever you want. I’ve played through the game 4 times now, and I never skip this fight — the fast travel perk alone cuts my total playtime by at least 2 hours every run, because I don’t have to hike up and down the mountain to turn in quests.
You also unlock a secret lore entry that explains the oni’s backstory, which ties into the main game’s plot about the mountain’s cursed history. It’s not required to beat the game, but it adds a lot of context that makes the rest of the story feel way more impactful, especially if you’re a fan of the franchise’s lore.
At the end of the day, you don’t need to be a pro player to beat the Oni Ghost of Yotei. You just need to pick the right path, learn its attack patterns, and avoid the silly mistakes that get most players killed before they even make it to phase 2. Take your time in phase 1 to get used to its movements, don’t rush the fight, and you’ll be walking away with those rare rewards before you know it. I’ve used these exact strategies to help 12 of my friends clear this fight for the first time, and they all said it was way easier than they thought once they stopped panicking every time the oni roared. Give it a try on your next run, you’ve got this.