Invasion plans
This article is a strategy guide for Waterfiend.
Information on mechanics, setups, and tactics is on this page.

This article contains information for players seeking to kill waterfiends, including the recommended equipment, inventory and strategies.

Waterfiends are weak to Ranged attacks and very weak to bolts. They are often killed due to their high crimson charm drop rate, which fuels Summoning training. While waterfiends are weaker to crossbows, bows like the attuned crystal bow are still very effective.

Recommended equipment for Ranged
Slot Item (most effective → least effective)
Head slot Full slayer helmet Full slayer helmet (if on assignment) Sirenic mask Sirenic mask Pernix cowl Pernix cowl Armadyl helmet Armadyl helmet Demon slayer circlet Demon slayer circlet
Neck slot Farsight blood necklace Farsight blood necklace Amulet of souls Amulet of souls Farsight sniper necklace Farsight sniper necklace Saradomin's murmur Saradomin's murmur Amulet of fury (t) Amulet of fury (t)
Back slot Ava's accumulator Ava's device Completionist cape Completionist cape TokHaar-Kal-Xil TokHaar-Kal-Xil Max cape Max cape Ardougne cloak 4 Ardougne cloak 4
Torso slot Sirenic hauberk Sirenic hauberk Pernix body Pernix body Armadyl chestplate Armadyl chestplate Demon slayer torso Demon slayer torso N/A
Legs slot Sirenic chaps Sirenic chaps Pernix chaps Pernix chaps Armadyl chainskirt Armadyl chainskirt Demon slayer skirt Demon slayer skirt N/A
Main hand slot Ascension crossbow Ascension crossbow Death Lotus dart Death lotus dart Chaotic crossbow Chaotic crossbow Attuned crystal chakram Attuned crystal chakram Armadyl crossbow Armadyl crossbow
2h slot Noxious longbow Noxious longbow Wyvern crossbow Wyvern crossbow Royal crossbow Royal crossbow Attuned crystal bow Attuned crystal bow Zaryte bow Zaryte bow
Off-hand weapon slot Off-hand Ascension crossbow Off-hand Ascension crossbow Off-hand Death Lotus dart Off-hand death lotus dart Off-hand chaotic crossbow Off-hand chaotic crossbow Off-hand attuned crystal chakram Off-hand attuned crystal chakram Off-hand Armadyl crossbow Off-hand Armadyl crossbow
Off-hand slot Vengeful kiteshield Vengeful kiteshield Attuned crystal deflector Attuned crystal deflector Eagle-eye kiteshield Eagle-eye kiteshield Elysian spirit shield Elysian spirit shield Armadyl buckler Armadyl buckler
Ammo slot Ascension bolts 4 Ascension bolts
Araxyte arrow 5 Araxyte arrows
Wyvern spines 5 Wyvern spines
Wild arrow 5 Wild arrows
Royal bolts 5 Royal bolts N/A N/A
Gloves slot Deathtouch bracelet Deathtouch bracelet Ascension grips Ascension grips Swift gloves (red) Swift gloves Pernix gloves Pernix gloves Armadyl gloves Armadyl gloves
Feet slot Flarefrost boots Flarefrost boots Pernix boots Pernix boots Armadyl boots Armadyl boots Demon slayer boots Demon slayer boots N/A
Ring slot Ring of death Ring of death Archers' ring (i) Archers' ring (i) Asylum surgeon's ring Asylum surgeon's ring Sixth-Age circuit Sixth-Age circuit
Onyx ring (i) Onyx ring (i)
Archers' ring Archers' ring
Aura slot Vampyrism aura Vampyrism aura N/A N/A N/A N/A
Pocket slot Holy wrench Holy wrench N/A N/A N/A N/A


Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
Super ranging potion (4)Ferocious ring (5)SharkShark

Mid-to-high-level inventory:

Lower-level inventory:

Although relatively strong against melee, waterfiends are weak to Darklight, especially if it has been upgraded after completing Dimension of Disaster. The upgraded Darklight offers a damage output similar to that of a tier 90 main-hand weapon, and its damage buffs also apply to whatever off-hand weapon is wielded, thus offering a slightly higher damage output than Ranged.

Recommended equipment for Melee
Slot Item (most effective → least effective)
Head slot Full slayer helmet Full slayer helmet (if on assignment) Malevolent helm Malevolent helm Torva full helm Torva full helm
Anima Core helm of Zaros Anima Core helm of Zaros
Bandos helmet Bandos helmet Dragon Rider helm Dragon Rider helm
Neck slot Brawler's blood necklace Brawler's blood necklace Amulet of souls Amulet of souls Brawler's knockout necklace Brawler's knockout necklace Saradomin's whisper Saradomin's whisper Amulet of fury (t) Amulet of fury (t)
Back slot Completionist cape Completionist cape TokHaar-Kal-Ket TokHaar-Kal-Ket Max cape Max cape Fire cape Fire cape Ardougne cloak 4 Ardougne cloak 4
Torso slot Malevolent cuirass Malevolent cuirass Torva platebody Torva platebody
Anima Core Body of Zaros Anima Core Body of Zaros
Bandos chestplate Bandos chestplate Dragon Rider body Dragon Rider body N/A
Legs slot Malevolent greaves Malevolent greaves Torva platelegs Torva platelegs
Anima Core Legs of Zaros Anima Core Legs of Zaros
Bandos tassets Bandos tassets Dragon Rider chaps Dragon Rider chaps N/A
Main hand slot Upgraded Darklight Darklight Darklight Darklight N/A N/A N/A
Off-hand weapon slot Off-hand drygore longsword Off-hand drygore longsword Tetsu wakizashi Tetsu wakizashi Off-hand chaotic longsword Off-hand chaotic longsword Off-hand attuned crystal dagger Off-hand attuned crystal dagger Off-hand crystal dagger Off-hand crystal dagger
Off-hand slot Malevolent kiteshield Malevolent kiteshield Attuned crystal shield Attuned crystal shield Chaotic kiteshield Chaotic kiteshield Divine spirit shield Divine spirit shield Dragonfire shield Dragonfire shield (charged)
Ammo slot Tirannwn quiver 4 Tirannwn quiver N/A N/A N/A N/A
Gloves slot Deathtouch bracelet Deathtouch bracelet Razorback gauntlets Razorback gauntlets Goliath gloves (red) Goliath gloves Torva gloves Torva gloves Bandos gloves Bandos gloves
Feet slot Emberkeen boots Emberkeen boots
Steadfast boots Steadfast boots
Torva boots Torva boots Bandos boots Bandos boots Dragon rider boots Dragon rider boots N/A
Ring slot Ring of death Ring of death Warrior ring (i) Warrior ring (i) Asylum surgeon's ring Asylum surgeon's ring Sixth-Age circuit Sixth-Age circuit
Onyx ring (i) Onyx ring (i)
Aura slot Vampyrism aura Vampyrism aura N/A N/A N/A N/A
Pocket slot Holy wrench Holy wrench N/A N/A N/A N/A


Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
Overload (4)Ferocious ring (5)SharkShark

Alternate location strategies

The most popular spot to kill waterfiends is the Ancient Cavern as it is easily accessible. However, there are two viable alternative locations: the Chaos Tunnels and the Ghorrock Fortress.

Players who have the Summoning level to use a geyser titan can kill waterfiends much more quickly in the Chaos Tunnels than in the Ancient Cavern, with consistent usage of the titan's scroll loaded into an enchanted helm. Using Soul Split and taking advantage of the occasional cooked shark drops, high level players can stay for a very long time (enough to make full usage of a Familiarisation triple-charm period).

With completion of The Temple at Senntisten, players can find waterfiends in the Ghorrock Fortress. However, their drops are different from the norm; the waterfiends at Ghorrock have a lower charm drop rate, but drop two charms at a time. A cannon can be used here, which is useful for efficient Slayer experience. The waterfiends here have a higher max hit (and hit higher in general), and are aggressive. Given that you have sufficient healing (bunyip/unicorn, vampyrism, soul split), it is easily afk-able.

Polypore Strike is also effective, especially when combined with Dragon Breath and Omnipower abilities. Using a hexcrest and a charged amulet of glory can result in 15% boost to magic damage against an assigned slayer target along with a 3.9% critical hit bonus.

Extra tips

  • It is also worth mentioning that while it may cost a certain amount to kill waterfiends through use of prayer potions, food or familiars etc., players can at least break even through picking up noted water orbs, noted snape grass, water talismans, ranarrs, lantadymes, items from the rare drop table, and even the reward from the level 3 clue scrolls they drop.
  • Some High Level Alchemy runes can be brought to alch valuable drops such as water battlestaves or armour pieces like the rune helm and adamant platebodies - even the less valuable staves and mithril items alch profitably. Due to lack of space, many people may not want to pick up all items and usually only pick up the stackable items such as water orbs, mithril arrows, and various runes. Alternatively, an explorer's ring 4 or an alchemist's amulet can be used.
  • For those fighting Waterfiends in the Ancient Cavern, using the fairy ring (code BJQ) is a much quicker route to stock up on food/potions than walking all the way from the Barbarian Outpost. Note that the fairy ring is only accessible after completing much of Barbarian Training, at least up to Pyre ships. Before the ring can be used, bittercap mushrooms must be planted there. With 5 mushrooms in your inventory, use one of the mushrooms on the 'enchanted lands' spot near the centre of the ring.
  • Waterfiends usually drop 1 water rune, 1 charm (typically crimson), and one other item or two grimy herbs. Sometimes the other item is 90 water runes. This means if a player examines the drop and sees only "charm" and "water rune", the odds are good that the player has received a charm and 91 water runes. If a player sees a charm, a water rune, and something else (like a shark), the water rune is 1 and not 91. The single water runes are not worth picking up. However, with the loot inventory, players can pick water runes up alongside with their desired drop (like water orbs) with no extra time needed.
  • Those, who can get their hands on blisterwood stakes and their off-hand variant (after completing The Branches of Darkmeyer quest), in conjunction with using abilities such as Needle strike, Piercing shot and Snipe, may find this weapon very efficient in dispatching Waterfiends, resulting in massive slaughter, with low cost and good drops. The Blisterwood stake-thrower crossbow unlocked partway through The Lord of Vampyrium is even more effective, due to the waterfiend's weakness to bolts (using Dazing Shot instead of Needle Strike).
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