Waterfiend

Waterfiends are the elemental cousin of the Pyrefiend and the Icefiend, and may be assigned as a slayer task by Duradel/Lapalok and Kuradal. They are found in the Ancient Caverns which can be accessed by completing Barbarian Training to the pyre ship stage. They may be the least harmful monster in the caverns, but they are no pushovers. Waterfiends attack with both magic and magical ranged attacks, both of which hit reasonably often, and can damage up to 119.The waterfiends ranged and magic attack has a very short attack range;only four squares. Waterfiends are also found in the Chaos Tunnels and within the Ghorrock Fortress after completing The Temple at Senntisten.

Waterfiends have a very high charm drop rate, especially for crimson charms (around 75 to 80%). For this reason, they are targeted by many players who wish to level up summoning quickly.

Waterfiends have extremely high defence against slashing and piercing attacks. They are weaker against crush attacks, but even there, their defence is good. Poison has no effect on waterfiends; a possible reason could be that it is merely washed out of their watery bodies, or it is because they don't have any (blood)veins through which the poison can harm their beings.

Strategy
Waterfiends' ranged attack is more powerful than their magic attack. Therefore, to take the least damage from them, a player should use Protect from Missiles along with armour with high magic defence (such as dragonhide or Karils). A protect prayer is not required to fight them, but their high accuracy means that unless magic and defence are both 95+, it certainly helps.

Waterfiends are very resistant to stab, slash, and magic attacks. A high level ranger of 80+ might have some success, using broad bolts or higher, enchanted diamond bolts. If you choose this method players should note the safe spot west of the waterfall entrance. In general, however, their opponents focus on crushing weapons, where the waterfiends' defensive resistance is merely good. Popular crush weapons include the following:
 * Saradomin sword
 * Any Godsword
 * Zamorakian spear
 * Verac's flail
 * Torag's hammers
 * Dragon mace
 * Dragon battleaxe
 * Tzhaar-ket-em
 * Chaotic maul
 * Ancient staff*
 * Granite Maul
 * Barrelchest anchor
 * Gravite 2h sword
 * Dragon 2h sword
 * Guthan's warspear

Of these weapons, the chaotic maul has the highest damage rate, and the Saradomin sword has the second highest. (Contrary to what is often assumed, a Godsword does not give a higher damage rate than a Saradomin sword, except on monsters with very high defence - and Waterfiends aren't high enough.) One-handed weapons should be used in tandem with a Dragon defender for added strength and crush bonus. The Tzhaar-ket-em, while not as effective as a Saradomin sword, should be combined with a berserker necklace and a dragon defender if it is to be used. Another underrated weapon is the Ancient Staff. It has the same speed as a whip, with a decent crush bonus. It can be used as a fairly cheap alternative to the more expensive Zamorakian Spear, and unlike the spear, can be used with a shield or defender. Another underrated weapon is the gravite 2h sword. It has a +90 strength bonus, and +87 crush bonus, both overwhelming the saradomin sword and zamorakian spear. It can be quite effective, even with its slow speed. It is a good alternative for those who have 64 or higher dungeoneering, although it is not used by most due to its slow speed and cost of recharge. Yet another weapon with an excellent crush bonus, for those who have completed Blood Runs Deep, is the Balmung.

Players who have the summoning level to use an Iron titan or Steel titan can kill waterfiends much more quickly in the Chaos Tunnels than in the Ancient Cavern, with consistent usage of the titan's scroll (load a slayer helm with scrolls for even faster kills). In conjunction with Soul Split, high level players can stay for a very long time (enough to make full usage of a Familiarisation triple-charm period).

After completing The Temple at Senntisten, the waterfiends at Ghorrock become level 115 (the same as at the other locations), but 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 is also able to be used there.

Since waterfiends drop large quantities of raw fish, it is sometimes recommended to take advantage of this either by cooking them on a fire in the cavern or using the Bunyip's scroll special to consume them raw. The latter is much easier to do in combat, but players must be aware that in order to use this special move, the player needs to have the required cooking level to cook the raw fish. Bunyips' healing abilities will also be welcome in the face of the Waterfiends' accurate attacks.

Ranging waterfiends is also a much cheaper strategy that involves finding a spot where you are around 4 spaces away from a waterfiend. Their attack range is 4 squares from their target. As long as you remain 4 squares between you and a waterfiend they cannot hit you. The one spot most used and easily used is the nearest spot to the stairs where you enter the cave. Across the pond to the north and to kill the waterfiend that spawns across the little river section. Another location is west of that spot on the other side of the river. After the waterfiends stop becoming aggressive (around 10-14 kills), you can just range them at will. It is reccomended however, to bring a melee weapon as well as a few prayer pots for the beginning while they are aggressive and in case you miss safe-spotting one.

Recommended Equipment

 * Armour
 * Full Slayer Helmet > Slayer helmet > Black mask (If it is a slayer task) or Helm of neitiznot (for the Strength and Prayer bonuses) or Dwarven helmet (for the crush bonus) or a Halo (for the Magic Defence) or Archer helm (for the Ranging bonus and Magic Defence) or Void Melee Helm / Void ranger helm depending on using melee or ranged.
 * Pernix body > Karil's leathertop > Armadyl chestplate > Elite Void Knight top >Black d'hide body > Void knight top
 * Pernix chaps > Karil's leatherskirt > Armadyl chainskirt > Elite Void Knight robe > Void Knight Robe > Black d'hide chaps
 * Barrows gloves > Regen bracelet > Combat bracelet
 * Dragon boots > Rune Boots > Rock climbing boots > Infinity boots (for the magic defence)
 * Amulet of fury > Amulet of glory > Amulet of ranging (for magic defence) > God stole (for the prayer bonus)
 * Soul Wars cape or Fire cape > Achievement capes(t) > Ardougne cloak 3 > God cloak
 * Chaotic maul (If 80 Dungeoneering and bought for 200k tokens)>Chaotic Longsword (Stab with dragon defender) > Saradomin sword (If training strength) or Zamorakian Spear (If training on controlled) > Saradomin Godsword > Armadyl Godsword > Bandos Godsword > Zamorak Godsword > Verac's flail > Barrelchest Anchor > Torag's hammers > Dragon mace (with Dragon defender) > Dragon battleaxe (with Dragon defender) > Rune Crossbow (with Broad-tipped bolts)
 * Onyx ring (i) &gt; Dragonstone ring (i) &gt; Diamond ring (i) &gt; Berserker ring (i) > Berserker ring > Explorer's ring 3 > Ring of Charos (i) or Ring of life
 * Bunyip (With Swallow Whole scrolls)/Unicorn stallion (with Healing Aura scrolls) > Titan (with Titan's Constitution scrolls) > Tinderbox and Logs
 * Bunyip (With Swallow Whole scrolls)/Unicorn stallion (with Healing Aura scrolls) > Titan (with Titan's Constitution scrolls) > Tinderbox and Logs

Inventory:
 * Dramen staff or Lunar staff - Not necessary if Fairytale III - Battle at Orks Rift is completed.
 * Enchanted gem or Ring of slaying - Not necessary if wearing Combat bracelet.
 * Prayer potion - At least 4 recommended; optional if using Unicorn stallion.
 * Saradomin Brew / Super restore (optional) Excallibur (e) (also optional)
 * Extreme attack / Extreme Strength > Super attack / Super strength - Bring at least two of each
 * Holy Wrench - only if bringing prayer potions or super restores (optional)
 * Good food, preferably Monkfish or better, is a must if you lack the level required summon any of the suggested familiars, since you can only use one protection prayer at a time.


 * Notes
 * Using a full set of Void Knight Equipment with a Void Melee Helm is arguably the best armour to wear when you aren't on a slayer task, as it has good magic defence and it boosts your attack and strength by 10%. Elite Void Knight equipment also offers a Prayer bonus of +4 per piece, or +8 total.
 * Using Armadyl armour is not recommended while using melee because the chestplate and plateskirt considerably lower crush accuracy and may affect your kill rate dramatically.
 * Using the Dragon battleaxe along with a dragon defender will provide a fairly high crush accuracy and strength bonus, making this a rather useful combination, comparable to the Saradomin sword or the Zamorakian spear. Although the crush attack bonus for a dragon battleaxe and dragon defender is higher than that of a Zamorakian spear, players will get more kills per hour with a Zamorakian spear because of its faster attack speed.
 * The Enhanced excalibur, held in the inventory, can be helpful at Waterfiends for its special attack, which raises defence by almost as much as a super defence potion and heals 200 life points; however, the special attack energy can be used in other ways, such as on Saradomin godsword specials.
 * It can be said that using a Bunyip and Swallow Whole scrolls is more effective than the other options, as it allows the player to make use of the raw lobster and shark drops. These can, however, come rarely at times, and can be a bit of a gamble (though the regular healing rate should be sufficient to sustain a player until such drops are received, especially if used in conjunction with Enhanced Excalibur.)
 * It can be said that using a Bunyip and Swallow Whole scrolls is more effective than the other options, as it allows the player to make use of the raw lobster and shark drops. These can, however, come rarely at times, and can be a bit of a gamble (though the regular healing rate should be sufficient to sustain a player until such drops are received, especially if used in conjunction with Enhanced Excalibur.)

''Note: 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 a Spade and 5 Mushrooms in inventory, use one of the mushrooms on the 'Enchanted lands' spot near the centre of the ring.''
 * Tips
 * They tend to drop lots of raw fish — usually more than a player can hold. A good way to keep this food is "rotate dropping": this is constantly dropping and picking up the food so it won't disappear. For example, if a player has a full inventory and the Waterfiend drops 6 raw lobsters, the player could drop 6 food or potions and pick 6 raw fish. After 1-2 kills, the player would then drop the 6 raw lobsters and pick up the 6 things that were dropped. By doing this, a player is allowed to virtually hold more. This can be very tedious but it will allow a player stay alive longer without prayer potions. This is preferably done with a Bunyip because of its ability to allow players to eat raw fish with the swallow whole scroll.
 * 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 and even the reward from the level 3 clue scrolls they drop. Water battlestaves can also be high alched for 9,300 coins. 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.
 * 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.
 * 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.
 * Waterfiends usually drop 1 water rune, 1 charm (typically crimson), and 1 other item (2 grimy herbs as the other item). 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. Usually the 91 Water Runes will appear on top of the Crimson Charm.

Locations
Waterfiends can be found in:
 * The Ancient Caverns
 * Chaos Tunnels
 * Ghorrock fortress

100% drop

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Runes

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Seeds

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Weapons and armour

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Herbs

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Gems, ores and bars

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Other drops
This item can only be obtained as a drop at Ghorrock.
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Clue scrolls are always dropped with blood runes.

Trivia

 * Almost all of the waterfiend's drops are blue/green or are related to water (e.g. Steam rune)
 * Waterfiends had an unannounced graphical update on 5 June 2008 - with this, some of their drops changed. Then, later that day, a system update after Smoking Kills was updated to remove the drop change, only to be changed once again to fix some bugs and change some of the drops that were mentioned on the forums.
 * Due to it being a form of water, it is weak to Crush attacks instead of more commonly used melee weapons. This is because stabbing and slashing weapons are generally thin or pointy, and subsequently don't cause as much impact against water as something that is either heavier or has a broader surface area, such as a maul.
 * At a high Attack level (95-99), it also appears that using stab attacks with weapons such as the Chaotic rapier and Chaotic Longsword on waterfiends does significant damage even though they are resistant to stab attacks in general.
 * Waterfiends have a different examine text compared to their elemental cousins, the Pyrefiends and Icefiends.
 * Waterfiends magical attack uses particles.

Waterfiend