We’re tackling Waterfiends in the Iorwerth Dungeon - a great mid- to high-level Slayer task that can be very rewarding if done correctly. Whether you’re chasing Slayer XP, charms, or just trying to clear your assignment efficiently, this guide will walk you through the entire process: from gear setup to combat strategy, and a few tips to make the grind smoother. And if you’re looking to speed up your progress or upgrade your setup without endless grinding, you can always buy OSRS gold to get the gear you need faster and make your Waterfiend tasks even more efficient.

Getting There

The Iorwerth Dungeon is located in Prifddinas, the Elf City. To access it, you’ll need to have completed the Song of the Elves quest. The entrance sits in the southwest corner of the city (think “never eat shredded wheat” - southwest). You can reach Prifddinas quickly using the Spirit Tree or Teleport to House if you have your portal directed there.

Once inside, you’ll find yourself at the main entrance of the dungeon. From there, navigate toward the pool of water area, which is where the Waterfiends reside. If you have 78 Agility, you can use the tightgap shortcut to reach them faster. Otherwise, simply run around - it’s a short detour.

Recommended Gear Setup

Now let’s talk gear. Don’t be intimidated by high-end setups - Waterfiends can be handled comfortably with mid-tier magic equipment. However, here’s what I use and what I recommend:

Head: Imbued Slayer Helm (always use this when on task)
Cape: Imbued Zamorak Cape (or God Cape of your choice)
Amulet: Occult Necklace (or Amulet of Fury as a budget option)
Weapon: Dragon Hunter Wand (any high-tier wand or elemental staff also works)
Body: Virtus Robe Top (Ahrim’s or Mystic top if you’re on a budget)
Legs: Ahrim’s Robe Skirt (or Mystic)
Shield: Book of Darkness (or any god book if you don’t have one)
Gloves: Tormented Bracelet (Substitute with Barrows Gloves if needed)
Boots: Eternal Boots (Infinity or Mystic boots are fine too)
Ring: Seer’s Ring (Imbued for best results)

You can also bring an Ash Sanctifier since Waterfiends drop demonic ashes - that means free passive Prayer XP as you go. I also like to carry Nature Runes for alching drops between kills, keeping my inventory tidy and adding a bit of profit.

Magic Setup & Spells

Waterfiends are 100% weak to Earth spells, so this is the core of your strategy.

Recommended spells:

· Earth Wave (Best balance between cost and power)

· Earth Blast (Budget-friendly option)

· Earth Surge (Highest DPS if you have Wrath Runes)

Equip your Rune Pouch with Air, Earth, Law, and Fire Runes - this gives you teleport flexibility while keeping your combat runes efficient.

Cannon & Inventory

Good news: You can use a Dwarf Multicannon in the Iorwerth Dungeon. However, note that this particular area is single combat, meaning your cannon will only assist on one target at a time. Still, it helps speed up kills noticeably.

Inventory setup:

· Cannon + Cannonballs

· Food (Sharks or better)

· Prayer Potions (optional but helpful if you want to stay longer)

· Runes for your spells

· Teleport tabs or runes for your exit

· Ash Sanctifier

· Alch runes (if you’re high alchemy-ing drops)

Combat Strategy

Once you’re in position near the pool of water, set up your cannon and get ready for combat. Waterfiends use both Magic and Ranged attacks, so you’ll need to protect against one style.

While many players default to Protect from Magic, testing shows that Protect from Missiles (Ranged) tends to reduce more incoming damage overall. Try both to see which fits your setup better, but Protect from Range generally performs best.

Keep Auto Retaliate on so you’re always engaging enemies efficiently, and reposition occasionally to let your cannon assist with tagging. Waterfiends can hit fairly hard even through prayer, so don’t underestimate them - bring enough food and don’t hesitate to teleport out if your Prayer runs low.

Tips & Tricks

· Use Earth spells - the weakness bonus massively speeds up your kills.

· Keep your Ash Sanctifier active for steady Prayer XP.

· Cannon placement matters - keep it close to spawn points for constant hits.

· Switch prayers if you find you’re taking more Magic than Ranged damage.

· Bring Alch runes - Waterfiends drop plenty of alcheables.

· Reposition smartly - staying too close to the water can attract extra aggro.

Final Thoughts

And that’s about it! Waterfiends in the Iorwerth Dungeon are a fun, slightly challenging Slayer task that rewards awareness and adaptability. Even if you don’t have endgame gear, you can handle them easily with solid mid-tier equipment and a smart approach. Whether you’re hunting XP, training Magic, or farming some extra GP, Waterfiends are well worth your time. And if you’re looking to upgrade your setup or restock supplies without breaking the bank, consider picking up some cheap RS gold to make your trips smoother and more profitable. Follow this guide, stay alert, and you’ll have smooth, efficient kills every trip. Happy slaying - and see you in the next one!