How to Defeat the Blood Moon in Old School RuneScape

To defeat the Blood Moon in the Moons of Peril dungeon, you must prioritize high melee defense over offensive strength bonus. The boss uses a lifesteal mechanic that restores health on successful hits, making defensive gear the most reliable way to shorten the fight. Pair tank armor with a slash weapon, deflect the jaguar strikes, and destroy blood clots from the safe moon circle.

How the Blood Moon Healing Mechanic Works

The Blood Moon attacks in a three-hit cycle. Each strike that successfully deals damage heals the boss, with the third strike siphoning a massive amount of health if it penetrates your armor.

Key mechanical rules govern this healing:

Defense rolls stop healing: If the boss rolls a zero against your defense, the healing chain breaks. Forcing misses is your primary method of limiting boss health regeneration.
Protection prayers do not reduce normal damage: Overhead prayers do not block incoming standard attacks during this fight. Your damage mitigation depends entirely on your gear's defensive stats.
Glass-cannon setups backfire: Wearing low-defense armor like the Fighter Torso or Void Knight sets causes the boss to hit consistently, allowing it to regenerate hundreds of Hitpoints across a few rotations.

Recommended Gear Priorities

Equip high-defense armor that specializes in slash and crush defense. While offensive off-hands speed up standard encounters, a defensive shield prevents the boss from chaining successful hits.

Gear Slot	High-Tier Option	Mid-Game Option	Stat Priority
Main Hand	Soulreaper Axe / Blade of Saeldor	Zombie Axe / Abyssal Whip	Slash attack accuracy and power
Body	Justiciar Chestguard	Torag's / Dharok's Platebody	Slash and crush defense
Legs	Justiciar Legguards	Torag's Platelegs / Verac's Plateskirt	Slash and crush defense
Shield	Dragonfire Shield	Crystal Shield / Dragon Defender	Raw melee defense (or accuracy)
Boots	Guardian Boots	Dragon Boots / Granite Boots	Melee defense and strength

Use a slash-style weapon. The Zombie Axe delivers heavy slash accuracy per hit, while the Abyssal Whip provides consistent attack speed. Dual Macuahuitl offers high damage output if you have already obtained it, but only use it if your defensive stats remain high enough to prevent extended boss healing.

Handling the Jaguar Phase

During the encounter, the Blood Moon relocates to the center of the arena, summons roaming jaguars, and highlights an illuminated puddle on the floor.

Step into the illuminated safe puddle immediately. Standing outside this pool causes continuous ambient blood damage.
Face the approaching jaguar. Every few ticks, a jaguar will leap toward your position.
Attack the jaguar as it pounces. Timing a melee swing as it leaps deflects the animal, dealing retaliatory damage and blocking the boss's lifesteal.
Remain on your safe tile. If you fail to hit the jaguar before it lands, it bites you for direct damage and restores health to the Blood Moon. Stay in the pool, deflect each leap, and wait for the phase to end.

Navigating Blood Rain and Blood Clots

When the Blood Moon triggers its blood rain phase, red puddles expand across the floor tiles, and a circular moon marker appears.

Move onto the illuminated moon circle. Standing outside the marked circle exposes you to constant tick damage from the falling rain.
Target nearby blood clots. Blood clots will spawn around the room. Attack and destroy the clots within your reach to stop the boss from absorbing them for large health bursts.
Do not abandon your tile. Never run across unprotected floor tiles to chase distant blood clots. Only attack the targets you can hit from inside or directly adjacent to your designated lunar safe circle.

Dungeon Preparation

Before entering the Blood Moon chamber, use the Moons of Peril prep rooms to gather supplies:

Cook local fish: Catch and cook provisions inside the dungeon halls to generate food scaled to your Cooking level.
Make Moonlight Potions: Combine local herbs and water vials to brew potions that act as both combat boosts and Prayer restores.
Enter at full health: Top off your Hitpoints completely before starting the fight so you do not risk falling to an unlucky three-hit sequence on the opening cycle.