Gleason's Gielinor GuideAn adventurer's field notes

LOCAL OSRS REFERENCE

Slayer task

Source revision 15343835 · Saved 2026-09-27 · Sources & credits

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A Slayer assignment is given by a Slayer master. Killing the assigned monsters grants players Slayer experience.

For some monsters, players may also be able to access more exclusive locations when assigned them as a task. These monsters can only be killed as part of a slayer assignment; attempting to kill them without the required task will prevent the player from doing so.

Some monsters can only be killed using the Slayer skill. For a list of these monsters, see Slayer monsters.

Task weighting

Task weighting is the system that Slayer masters use to assign Slayer assignments. Each possible assignment has a weight value — the higher this value, the more likely that task will be assigned. The percentage chance of getting assigned a given Slayer task can be calculated using the formula

(wS×100)%

where w is the task's weight and S is the sum of all weights for the particular Slayer master that the player has the requirements to be assigned. This means that the weights of blocked tasks, tasks that are toggled off, and tasks that the player does not have the Slayer level or quest requirements for are not added to the sum S.

For example, below is a hypothetical list of monsters that a Slayer master may assign:

Monster Task weight
Spiritual creatures 8
Dark beast 10
TzHaar 9
Abyssal demon 10
Aviansie 6
Metal dragons 14

If a player has level 85 Slayer, and has not unlocked TzHaar and Aviansie tasks via Slayer reward points, then the list will be filtered so that the player can only be assigned abyssal demons, spiritual creatures, and metal dragons. The player cannot boost their Slayer level to obtain a task above their base Slayer level; eating a wild pie to boost to 90 Slayer (which means dark beasts can be attacked) will not make that task available.

In this case, the total weight would be 32. The player would have a 31.25% chance of being assigned abyssal demons, 25% chance for spiritual creatures and a 43.75% chance of being assigned metal dragons.

List of assignments

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Reason:

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Note: Tasks assigned by Konar or Krystilia must be killed in their assigned locations in order to count towards their task.

Slayer Task Superiors and alternatives Location Required Items Other requirements Slayer master(s)
60 Aberrant spectres
  • Abhorrent spectre
  • Repugnant spectre
  • Deviant spectre
85 Abyssal demons
  • Greater abyssal demon
  • Abyssal Sire
 N/A [a]
1 Ankou N/A N/A
  • Combat level 40
78 Aquanites
  • Elder Aquanite
  • Ynysdail Cavern
 N/A
  • Sailing 73

[b]
92 Araxytes
  • Dreadborn Araxyte
  • Araxxor
 N/A
1 Aviansie
  • Kree'arra
  • Flight Kilisa
  • Flockleader Geerin
  • Wingman Skree
  • Strength 60 or Agility 60
  • Watch the birdie
1 Bandits
  • Black Heather
  • Speedy Keith
  • Donny the lad
  • Bandit Camp
 N/A
15 Banshees
  • Screaming banshee
  • Screaming twisted banshee
  • Twisted Banshee
40 Basilisks
  • Monstrous basilisk
  • Basilisk Sentinel
  • Basilisk Knights
  • Combat level 40

[c]
1 Bats N/A
  • Combat level 5
1 Bears N/A
  • Combat level 13
1 Birds
  • Various locations throughout Gielinor
 N/A N/A
1 Black demons N/A
  • Combat level 80
1 Black dragons[d]
1 Black Knights N/A N/A N/A
50 Bloodvelds N/A
1 Blue dragons
47 Brine rats N/A
1 Catablepon N/A N/A
  • Combat level 35
7 Cave bugs N/A
  • Bullseye lantern (lit)
    • Fire of Eternal Light
 N/A
10 Cave crawlers
  • Chasm Crawler
 N/A
  • Combat level 10
58 Cave horrors
  • Cave abomination
  • Mos Le'Harmless Cave
  • Witchwood icon
  • Bullseye lantern (lit)
    • Fire of Eternal Light
17 Cave slimes N/A
  • Bullseye lantern (lit)
    • Fire of Eternal Light
  • Combat level 15
87 Cave kraken
  • Kraken
  • Kraken Cove
 N/A
  • Combat level 80
  • Magic 50
1 Chaos druids
  • Elder Chaos druid
 N/A N/A
25 Cockatrices
  • Cockathrice
  • Moonlight Cockatrice
  • Combat level 25
  • Defence 20
1 Cows N/A N/A
1 Crabs N/A N/A
5 Crawling Hands
  • Crushing hand
 N/A
1 Crocodiles N/A N/A
  • Combat level 50
54 Custodian stalkers
  • Ancient Custodian
  • Juvenile custodian stalker
  • Mature custodian stalker
  • Elder custodian stalker
 N/A
1 Dagannoth
  • Dagannoth fledgeling
  • Dagannoth spawn
  • Dagannoth Prime
  • Dagannoth Rex
  • Dagannoth Supreme
 N/A
  • Combat level 75
90 Dark beasts
  • Night beast
 N/A
1 Dark warriors N/A
  • Dark Warriors' Fortress
 N/A N/A
1 Dogs N/A
  • Combat level 15
84 Drakes
  • Guardian Drake
  • Combat level 90
65 Dust devils
  • Choke devil
 [a]
1 Dwarves
  • Black Guard
  • Chaos dwarf
 N/A
  • Combat level 6
1 Earth Warriors N/A N/A
  • Combat level 35
1 Elves N/A
1 Ents N/A
  • Forests north and east of the Chaos Temple
 N/A N/A
42 Fever spiders N/A
1 Fire giants
  • Branda the Fire Queen
 N/A
  • Combat level 65
1 Flesh Crawlers N/A N/A
  • Combat level 15
66 Fossil Island Wyverns
  • Ancient wyvern
  • Spitting wyvern
  • Taloned wyvern
  • Long-tailed wyvern
1 Frost dragons N/A
  • Grimstone Dungeon
  • Combat level 85
  • Sailing 87
75 Gargoyles
  • Marble gargoyle
  • Grotesque Guardians
  • Rock hammer
    • Rock thrownhammer
    • Granite hammer
1 Ghosts
  • Tortured soul
 N/A
  • Combat level 13
1 Ghouls N/A N/A
1 Goblins
  • Sergeant Strongstack
  • Sergeant Grimspike
  • Sergeant Steelwill
  • Cave Goblin
 N/A N/A
1 Greater demons N/A
  • Combat level 70
1 Green dragons
51 Gryphons
[b]
33 Harpie bug swarms N/A
  • Karamja
  • East of the Colossal Wyrm Remains
  • Lit bug lantern
  • Combat level 45
  • Firemaking 33
1 Hellhounds
  • Cerberus
 N/A
  • Combat level 75
1 Hill Giants N/A
  • Combat level 25
1 Hobgoblins N/A N/A
  • Combat level 20
95 Hydras
  • Colossal Hydra
  • Alchemical Hydra
 N/A
1 Icefiends N/A N/A
  • Combat level 20
1 Ice giants
  • Eldric the Ice King
 N/A
  • Combat level 50
1 Ice warriors N/A
  • Combat level 45
45 Infernal Mages
  • Malevolent Mage
  • Slayer tower
 N/A
52 Jellies
  • Vitreous Jelly
  • Vitreous Warped Jelly
  • Vitreous Chilled Jelly
  • Warped Jelly
  • Chilled jelly
 N/A
  • Combat level 57
[a]
1 Jungle horrors N/A N/A
1 Kalphites
  • Kalphite Queen
  • Kalphite Worker
  • Kalphite Soldier
  • Kalphite Guardian
 N/A
  • Combat level 15
37 Killerwatts N/A
  • Killerwatt plane
 Insulated boots
70 Kurasks
  • King kurask
  • Leaf-bladed weapons
  • Combat level 65
  • Ability to use Leaf-bladed weapons
1 Lava dragons N/A
1 Lesser demons
  • Zakl'n Gritch
 N/A
  • Combat level 60
48 Lesser Nagua N/A
1 Lizardmen
  • Lizardmen Settlement
  • Lizardman canyon
 N/A
  • Reptile got ripped unlocked
22 Lizards
  • Desert Lizard
  • Grimy Lizard
  • Lizard
  • Small Lizard
  • Sulphur Lizard
 N/A
1 Magic axes N/A
  • Magic Axe Hut
  • Thieving 23
1 Mammoths N/A
  • West of the Chaos Temple
 N/A N/A
1 Metal dragons N/A
  • Varies
1 Minotaurs N/A N/A
  • Combat level 7
32 Mogres
  • (except for swimming Mogres)
39 Molanisks N/A
  • Slayer bell
1 Monkeys N/A N/A
1 Moss giants
  • Bryophyta
 N/A
  • Combat level 40
80 Nechryael
  • Nechryarch
  • Greater Nechryael
 N/A [a]
1 Ogres N/A
  • Combat level 40
1 Otherworldly beings N/A N/A
1 Pirates
  • Zombie pirate
  • Pirates' Hideout
  • Chaos Temple (Wilderness)
 N/A Thieving 39
30 Pyrefiends
  • Flaming pyrelord
  • Infernal pyrelord
  • Pyrelord
 N/A
  • Combat level 25
1 Rats N/A N/A
1 Red dragons
1 Revenants N/A
  • Revenant Caves
 N/A N/A
20 Rockslugs
  • Giant rockslug
  • Combat level 20
1 Rogues N/A
  • Rogues' Castle
  • south-west of Mage Arena
 N/A N/A
1 Scabarites N/A
1 Scorpions N/A
  • Combat level 7
1 Sea snakes
  • Miscellania & Etceteria Dungeon
 N/A
1 Shades
  • Loar Shade
  • Phrin Shade
  • Riyl shade
  • Asyn shade
  • Fiyr shade
  • Urium Shade
 N/A
  • Combat level 30
1 Shadow warriors N/A N/A
72 Skeletal Wyverns N/A
1 Skeletons N/A
  • Combat level 15
93 Smoke devils
  • Nuclear smoke devil
  • Thermonuclear smoke devil
  • Smoke Devil Dungeon
  • Combat level 85
1 Sourhogs N/A
1 Spiders N/A N/A
1 Spiritual creatures N/A N/A
1 Suqahs N/A N/A
40 Terror dogs N/A N/A
1 Trolls N/A
  • Combat level 60
55 Turoth
  • Spiked Turoth
  • Leaf-bladed weapons
  • Combat level 60
  • Ability to use Leaf-bladed weapons
1 TzHaar N/A
  • Hot stuff unlocked
1 Vampyres
[f]
74 Venators
  • Blood-starved venator
35 Wall Beasts N/A
  • Combat level 35
  • Defence 5
56 Warped creatures
  • Poison Waste Dungeon
[f]
1 Waterfiends N/A N/A
  • Combat level 75
1 Werewolves N/A N/A
1 Wolves N/A
  • Combat level 20
62 Wyrms
  • Shadow Wyrm
  • Magma strykewyrm
  • Lava Strykewyrm
  • Wyrmling
 N/A N/A
1 Zombies N/A
  • Combat level 10
57 Zygomites
  • Ancient Zygomite
  • Fungicide spray
  • Fungicide
  1. ^ 1.0 1.1 1.2 1.3 Task must be unlocked with Slayer reward points to be assigned by Krystilia.
  2. ^ 2.0 2.1 Task must be unlocked with Slayer reward points to be assigned by Nieve and Duradel.
  3. ^ Task must be unlocked with Slayer reward points to be assigned by Konar, Nieve and Duradel.
  4. ^ The King Black Dragon does not count towards a black dragon task assigned by Krystilia.
  5. ^ 5.0 5.1 Boots of stone and its derivatives are not required with completion of the elite Kourend & Kebos Diary.
  6. ^ 6.0 6.1 Task must be unlocked with Slayer reward points to be assigned by Chaeldar, Konar, Nieve and Duradel.

Changes

Date Changes
24 March 2016
(Update | poll)

It is now possible to unlock the chance to receive a Lizardmen slayer task from Duradel, Nieve and Chaeldar. Unlocking this task costs 75 Slayer points.

10 September 2015
(Update)
  • Gargoyles, nechryaels, abyssal demons, spiritual mages, spiritual rangers and spiritual warriors can now be assigned by Vannaka.
  • Chaeldar will now assign between 110 and 170 spirit creatures and aviansie.
  • Removed a number of terrible assignments from Duradel.
  • Duradel will now assign between 130 and 200 nechryaels, spiritual mages and spiritual rangers.
  • Nieve can now assign between 10 and 20 black dragons.
  • Nieve can now assign dark beasts.
3 September 2015
(Update)

Players who click out of the dialogue by accident when being offered a Jad slayer task now have 1 minute where they can talk to the master and be re-offered this choice.

16 April 2015
(Update)

Vultures now count toward a birds slayer task.

5 March 2015
(Update | poll)

You now receive 10% more Slayer experience when killing a creature on task in the Slayer Tower if you have completed the Morytania Elite Diary.

Sources & credits

“Slayer task” by Old School RuneScape Wiki contributors, revision 15343835. Text adapted under CC BY-NC-SA 3.0; adapted text is shared under the same license. Formatting and navigation changed; Wiki scripts and editing controls omitted. Game imagery © Jagex Ltd. Imported image-file descriptions retain their own credits and licensing statements.

Original source address: https://oldschool.runescape.wiki/w/Slayer_task?oldid=15343835

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