OSRS Black Demons Chasm of Fire Ultimate Slayer Guide

Old School RuneScape (OSRS) players seeking to conquer Black Demons in the Chasm of Fire will find this guide invaluable. The Chasm of Fire, located in Shayzien, is a prime spot for slaying Black Demons, offering unique advantages like cannon usage and safespots. This blog post dives into everything you need to know to maximize experience, profit, and efficiency while tackling this high-level Slayer task. Whether you’re a mid-level player or a seasoned veteran, this guide will help you dominate Black Demons with ease.
The Chasm of Fire is a Slayer-only dungeon in the northwest corner of Shayzien, Great Kourend, making it an exclusive spot for players on a Black Demon task. Its design, with multiple floors and specific demon types, ensures focused gameplay without interference from other monsters. Here’s why it stands out:
- Slayer-Only Access: Only players on a Slayer task can attack Black Demons, reducing competition.
- Cannon Support: You can use a dwarf multicannon to boost kill speed and experience rates.
- Safespots: Multiple safespots allow for low-effort, high-reward kills using Ranged or Magic.
- Accessibility: Easy to reach via fairy ring (code DJR) or other teleports like Xeric’s Talisman.
Location and Getting There
The Chasm of Fire is accessible through several methods, making it convenient for players:
Method | Requirements | Details |
---|---|---|
Fairy Ring | Access to Great Kourend | Use code DJR to teleport southeast of the Chasm entrance. |
Xeric’s Talisman | Xeric’s Talisman | Teleport to Xeric’s Lookout and run northwest. |
Kharedst’s Memoirs | Tale of the Righteous quest | Teleport to Graveyard of Heroes and head west. |
Battlefront Teleport | Magic level 23, runes | Teleport northwest of the Chasm, watch for lizardmen. |
Black Demon Stats and Weaknesses
Black Demons are level 172, 184, or 188 monsters with high offensive stats but relatively low defense, making them ideal for Slayer tasks. They use a melee slash attack with a max hit of 16-17, which can be negated with Protect from Melee prayer. Understanding their weaknesses is key to efficient kills.
Key Combat Stats
- Hitpoints: 157-200, depending on variant.
- Defense: 152-162, weak to all attack styles.
- Weaknesses: Demonbane weapons (e.g., Arclight), water spells, and Magic.
- Slayer XP: 157-200 per kill, boosted with cannon.
Alternative Monsters
If you’ve completed Monkey Madness II, consider killing Demonic Gorillas instead, as they count toward Black Demon tasks and offer better drops, including Zenyte Shards (1/300 rate). Skotizo in the Catacombs of Kourend is another alternative for high-value loot, though it requires specific conditions to access.
Optimal Gear and Inventory Setup
Your gear and inventory setup will depend on your combat style and budget. Below are recommended setups for melee, Ranged, and Magic, optimized for the Chasm of Fire’s unique environment.
Melee Setup
Melee is effective with prayer-boosting gear to maintain Protect from Melee. Use high-DPS weapons for faster kills.
- High-Level: Slayer Helm (i), Amulet of Torture, Bandos Chestplate, Bandos Tassets, Primordial Boots, Arclight or Ghrazi Rapier, Infernal Cape, Ferocious Gloves, Berserker Ring (i).
- Mid-Level: Black Mask, Amulet of Fury, Proselyte Hauberk, Proselyte Cuisse, Dragon Boots, Dragon Scimitar, Dragon Defender, Combat Bracelet.
Ranged Setup
Ranged setups shine in safespots, allowing you to avoid damage entirely.
- High-Level: Slayer Helm (i), Necklace of Anguish, Armadyl Chestplate, Armadyl Chainskirt, Pegasian Boots, Toxic Blowpipe with Amethyst Darts, Ava’s Assembler, Archers Ring (i).
- Mid-Level: Archer Helm, Amulet of Glory, Black D’hide Body, Black D’hide Chaps, Snakeskin Boots, Rune Crossbow with Broad Bolts, Ava’s Accumulator.
Magic Setup
Magic is highly effective due to Black Demons’ weakness to water spells.
- High-Level: Slayer Helm (i), Occult Necklace, Ahrim’s Robetop, Ahrim’s Robeskirt, Eternal Boots, Trident of the Seas, Tormented Bracelet, Imbued God Cape.
- Mid-Level: Mystic Hat, Amulet of Magic, Mystic Robe Top, Mystic Robe Bottom, Wizard Boots, Iban’s Staff, Book of Darkness.
Inventory Recommendations
Your inventory should support sustained combat and efficient looting:
- Essentials: 4-6 Prayer Potions, 1-2 Super Combat Potions (or Ranging/Magic Potions), 15-20 high-healing food (e.g., Sharks).
- Optional: Dwarf Multicannon with 500-1000 cannonballs, Soul Bearer (for Ensouled Demon Heads), Herb Sack, High Alchemy runes for loot.
- Teleport: Fairy Ring staff or Xeric’s Talisman for quick exit.
Slayer Strategies for Chasm of Fire
The Chasm of Fire’s bottom floor, where Black Demons reside, offers multiple strategies to suit different playstyles. Here’s how to maximize your efficiency.
Cannoning for Fast XP
Using a dwarf multicannon in the Chasm of Fire is the fastest way to gain Slayer XP, yielding up to 35K XP per hour with max melee stats and Piety prayer. Place the cannon near the north pillar, where multiple Black Demons spawn, and attack from a safespot to let the cannon do most of the work. Ensure Auto-Retaliate is on and Protect from Melee is active.
Safespotting for AFK Training
Safespots are abundant in the Chasm of Fire, particularly near the north pillar and narrow pathways. Stand behind a rock pile or in a corner where Black Demons can’t reach you, and use Ranged or Magic. This method is ideal for AFK training, requiring minimal input while still providing decent XP (19-23K per hour with mid-level stats).
Demonic Gorillas for Profit
If profit is your goal, switch to Demonic Gorillas after completing Monkey Madness II. They drop high-value items like Zenyte Shards (worth over 9M GP) and offer better loot than standard Black Demons. However, they require switching combat styles to counter their protection prayers, so bring a melee and Ranged/Magic setup.
Tips for Maximizing Efficiency and Profit
To make the most of your Black Demon Slayer task in the Chasm of Fire, follow these tips:
- Extend the Task: Unlock “It’s Dark in Here” for 100 Slayer points to extend Black Demon tasks to 200-250 kills, increasing XP and loot potential.
- Konar Tasks: If assigned by Konar quo Maten, Black Demons have a special drop table, averaging 3.4K GP per kill compared to 2K GP normally.
- Loot Management: Pick up high-value drops like Rune Chainbody, Clue Scrolls (Hard), and Ensouled Demon Heads. Use High Alchemy for items like Black Swords or Mithril Kiteshields.
- Anti-Poison: Carry an antipoison potion if traveling through lizardman areas to reach the Chasm.
- Runelite Plugins: Use Runelite’s Cannon Placement and Loot Tracker plugins to optimize cannon positioning and monitor profits.
Notable Drops
While Black Demons aren’t the most profitable Slayer task, they offer consistent drops:
Item | Drop Rate | Approx. Value |
---|---|---|
Rune Chainbody | 1/128 | 30K GP |
Clue Scroll (Hard) | 1/128 (1/60 on Krystilia task) | Variable |
Ensouled Demon Head | 1/35 | 5K GP |
Malicious Ashes | Guaranteed | 65 Prayer XP |
Should You Block Black Demons?
For players under 100 combat, Black Demons can be slow and challenging, making them a candidate for a block task. However, with a cannon and safespots in the Chasm of Fire, mid-level players (70+ combat stats) can achieve decent XP rates. If you’re struggling, consider canceling the task with Slayer points to preserve your streak.
With this guide, you’re ready to tackle Black Demons in the Chasm of Fire like a pro. Whether you’re cannoning for XP, safespotting for AFK training, or chasing Demonic Gorilla loot, the Chasm offers versatile options for every player. Happy slaying!