The Custodia Pass Slayer Dungeon is one of the newer high-level Slayer dungeons introduced into Old School RuneScape (OSRS). Designed for players who have already cut their teeth on the likes of the Catacombs of Kourend or the Fremennik Slayer Dungeon, this pass brings a mix of deadly monsters, environmental hazards, and RuneScape gold some of the best Slayer experience rates in the game when tackled efficiently. Whether you’re coming in for profit, Slayer XP, or to chase rare drops, understanding how to navigate Custodia Pass will save you countless hours—and plenty of deaths.

Unlocking the Dungeon

Before you step foot into Custodia Pass, you’ll need to meet specific requirements:

Slayer Level: 85+ minimum, though 90+ is highly recommended.

Quests: Completion of The Warden’s Oath unlocks access, tying into the dungeon’s lore of guarding ancient relics.

Gear Check: A combat level of 100+ is strongly recommended, as the monsters here are designed to punish underprepared adventurers.

The entrance is located in the southern reaches of the Kandarin Mountains, accessible via the Spirit Tree network or a nearby fairy ring code (CKP).

Dungeon Layout

Custodia Pass is divided into three primary zones, each with unique monster spawns, environmental hazards, and loot potential:

The Ember Caverns – Fire-based enemies with high Strength and burning tile mechanics.

The Shadow Warrens – A maze-like section filled with stealthy creatures and poison traps.

The Vault of Chains – The final chamber with elite Slayer monsters, higher risk but much greater rewards.

Each section escalates in difficulty, but also in profit and XP yield.

Monsters to Expect

Ember Caverns

Ashen Golems (Slayer 85)

Weakness: Crush attacks

Special: Occasionally explode on death, dealing AoE fire damage.

Drops: Rune bars, Fire orbs, and noted coal.

Blazehounds (Slayer 88)

Extremely fast attacks but low defense.

Drop consistent crimson charms and dragon bones.

Their fangs are used in high-level Herblore recipes.

Shadow Warrens

Nightstalkers (Slayer 90)

Stealth attacks: Can strike from behind walls.

Weak to Magic (Ice Barrage shines here).

Drops: Onyx bolt tips, shadow essence.

Venomous Mycenae (Slayer 92)

Mushroom-like beasts spreading poison spores.

Bring antidote++ or you’ll be overwhelmed.

Drop: Herbs, especially high-tier ones like torstol.

Vault of Chains

Ironbound Sentinels (Slayer 95)

High defense, crush weakness.

Drop rune platebodies, ancient keys for vault chests.

Custodian Wardens (Slayer 98)

Mini-boss style enemies.

Use chains to bind players briefly—prayer switching and mobility are key.

Drop some of the dungeon’s most sought-after loot, including Custodian Sigils (used to create best-in-slot defensive jewelry).

Recommended Gear

Melee Setup

Best-in-slot Crush Weapon: Abyssal Bludgeon, Dragon Hunter Mace, or even Scythe of Vitur for elites.

Armor: Bandos or Torva if available; otherwise, Fighter Torso + Verac’s skirt provides balanced stats.

Inventory: Super combat potions, Saradomin brews, and a Rune pouch with teleports.

Ranged Setup

Bow of Faerdhinen (crystal) or Twisted Bow for elite monsters.

Armor: Armadyl or Crystal Armor.

Recommended for Shadow Warrens where Nightstalkers are weakest to ranged and magic hybrids.

Magic Setup

Ancient Magicks (Ice spells for crowd control).

Gear: Ahrim’s, Ancestral, or Void Mage.

Great utility in Shadow Warrens for freezing and bursting grouped enemies.

Inventory Essentials

Slayer Helmet (i) for accuracy boosts.

Antidote++ or Antivenom for Shadow Warrens.

Prayer Potions or Super Restores to sustain Protect from Melee/Magic.

Rune Pouch with Teleport to House, High Alch runes, and combat spells.

One-click teleport (Ectophial or Royal Seed Pod).

Strategies for Each Zone

Ember Caverns

Stay mobile to avoid death explosions from Ashen Golems.

Position Blazehounds against walls to minimize running space.

Protect from Melee is the go-to prayer here.

Shadow Warrens

Use corners to funnel Nightstalkers into your barrage spells.

Always clear Venomous Mycenae quickly—their poison spores linger even after death.

If low on supplies, this zone has the safest exit routes.

Vault of Chains

Activate Protect from Missiles against Sentinels but switch to Protect from Melee when Custodian Wardens bind you.

Save special attack energy for Sentinels—they have higher HP pools.

Keep moving; standing still risks chain binds stacking.

Slayer Task Efficiency

The Custodia Pass is designed with Slayer efficiency in mind:

Expect 90k–110k Slayer XP/hr depending on monster rotation.

Using a cannon in Ember Caverns boosts kill speed but demands high attention.

Barrage/burst setups in Shadow Warrens are optimal for profit and XP farming.

Loot and Rewards

The dungeon is highly profitable if tackled efficiently:

Blazehound Fangs: Used in endgame Herblore potions, 100k+ each.

Shadow Essence: Craftable into high-value teleport tablets.

Custodian Sigils: Rare drops from Wardens, used in crafting the Custodian Amulet, one of the best defensive amulets in OSRS.

Vault Chests: Unlocked with keys dropped by Sentinels, containing high-value items like dragonstone jewelry, noted bars, and rune crafting supplies.

On average, players can expect 2.5m–4m gp/hr with efficient Slayer strategies.

Tips and Common Mistakes

Forgetting Poison Protection – Venom from Mycenae will drain you fast.

Not Managing Arena Explosions – Ashen Golems’ death explosions are the #1 killer for new players.

Standing Still in Vault of Chains – The Wardens punish immobility by chaining you down.

Wasting Supplies Early – Save brews and restores for the final zone.

Conclusion

The Custodia Pass Slayer Dungeon is one of the most rewarding but dangerous Slayer training spots in Old School RuneScape. With unique monsters, environmental hazards, and cheap RuneScape gold high-level rewards, it challenges players to use every tool OSRS offers—gear optimization, prayer switching, and Slayer knowledge. By preparing with the right setup and learning each zone’s rhythm, you can turn Custodia Pass into both an XP powerhouse and a goldmine.