Black demons are a high-level Slayer task in Old School RuneScape (OSRS) that challenge players with powerful melee attacks and significant combat potential. With a max hit of 16, these demons require careful preparation with RS gold and strategic planning. Fortunately, with the right setup and knowledge of their locations, you can maximize efficiency, minimize risk, and achieve excellent Slayer experience gains. This guide will walk you through everything from combat strategies to optimal gear and navigation.

Understanding Black Demon Mechanics
Black demons primarily attack with melee, making Protect from Melee prayer a strong defensive choice. They are found in six main locations across Gielinor, each offering unique combat conditions: multi-combat zones, safe spots, cannon-friendly areas, and wilderness settings. Your approach should vary depending on location and your combat style.
For high-DPS setups, magic is generally the superior choice due to black demons’ low magic defense, particularly when using Demonbane spells. Base-90 combat stats paired with high-tier gear can significantly enhance magic output. However, rune costs can be steep, so ranged or melee options often provide more budget-friendly alternatives. At lower combat levels, water spells combined with items like the Twinflame Staff and Tome of Water offer substantial boosts in damage and accuracy, often outperforming melee and ranged options.
Ranged and melee setups remain reliable, particularly when safe-spotting in multi-combat areas or when using Protect from Melee in the Wilderness. Using a cannon in combination with any combat style further increases efficiency, especially at locations like the Chasm of Fire.

Optimal Gear and Inventory Setup
Effective Slayer tasks rely on maximizing DPS while minimizing risk. Start by choosing three valuables-commonly your weapon, helmet, and necklace-and then fill the remaining slots with cheap welfare gear. Armor charts tailored for melee, ranged, magic, and wilderness setups can simplify this process. For inventory, prioritize stat-boosting potions, prayer potions, and cannonballs if using a cannon. Quick prayers and auto-retaliate settings streamline combat and reduce the need for constant attention.

Location-Specific Strategies
Brimhaven Dungeon
Access the Brimhaven dungeon via Tai Bwo Wannai teleport or fairy rings (CKR) using the Banis entrance. Equip an anti-dragon shield and Protect from Melee to navigate past bronze dragons safely. Once at the black demons, deploy your cannon and activate offensive prayers. Safe spotting from the northwestern corner is an efficient strategy if avoiding cannon use.
Catacombs of Karend
Fast travel options include Karen teleport, Xerox’s Talisman, or mine cart systems. Navigate east past lesser demons to reach the black demons. Safe spots are marked within the room for ranged or magic users. Use stat-boosting items and optional prayer regen potions to maximize efficiency.
Charmed Dungeon
Teleport via the Boat spell or summon a boat at the Void Knight Outpost. After entering the dungeon and passing dragons with Protect from Melee, loop around to black demon rooms. Deploy cannons in designated spots or safe spot along the western wall.
Chasm of Fire
Chasm teleport scrolls, fairy rings (DJR), or minecart travel to Hatna are recommended. Agility shortcuts with 73–83 Agility save time and allow direct access to black demons. For ranged or magic, the western stileagmites provide excellent safe-spotting opportunities.
Taverly Dungeon
Teleports via Taverly or Fiddor, combined with agility shortcuts (63–70 Agility), allow quick access to black demons. A dusty key may be required to bypass southern dungeon gates. Protect from Melee and anti-dragon shields are recommended when passing through areas with dragons.
Wilderness Slayer Cave
The Wilderness adds PvP risk, so always use Protect from Magic and keep a one-click teleport ready. Wilderness weapons charged with ether offer a 50% damage and accuracy boost, but losing them costs around 300K GP. Budget-friendly alternatives are safe but slightly slower. Stand east of the stairs to attack from a safe distance and quickly teleport if danger arises.

Combat Tips and Theorycrafting
Magic offers the highest DPS at high stats, particularly when using Demonbane and water spells. Ranged and melee are viable and safer alternatives, especially in the Wilderness. Always monitor prayer points and potion supplies. Refill cannonballs promptly to maintain sustained damage output. For safe spotting, mark tiles in advance and adjust positioning as necessary.
With careful preparation, effective gear, and smart navigation, black demon tasks in OSRS can be completed efficiently and safely, maximizing both Slayer experience with cheap OSRS items and loot rewards. By combining theorycrafting with practical execution, you can approach these high-level Slayer tasks like a seasoned OSRS player.