Old School RuneScape: How To Solo Dagannoth Rex

Feb-26-2025 PST Category: runescape

The Waterbirth Island Dungeon in Old School RuneScape is home to the fearsome Dagannoth Kings, three powerful bosses each with different combat styles. While all of them are tough to defeat, Dagannoth Rex is generally considered the easiest to solo. With impressive drops like the Berserker Ring and Dragon Axe, soloing Rex is a profitable endeavor for players looking to make some OSRS Gold. Here's how you can efficiently take down Dagannoth Rex on your own.

How To Find Dagannoth Rex

 

Dagannoth Rex resides in the Waterbirth Island Dungeon, located on sublevel six, alongside the other two Dagannoth Kings. To access Waterbirth Island, you must complete The Fremennik Trials quest, which unlocks the ability to travel to the island via boat or the Waterbirth Teleport spell from the Lunar Spellbook.

 

Once you're on the island, head down the dungeon and continue to the Kings' Ladder, which leads to the Dagannoth Kings' chamber. If you're on a Slayer task, you'll enter a Slayer-only instance for the fight. Otherwise, you'll find Rex here along with the other Kings, ready for battle.

 

Suggested Levels And Equipment

 

To efficiently solo Dagannoth Rex, your character should be prepared with the following:

 

Combat Stats:

 

60 Defence and 60 Hitpoints are the minimum recommended levels. Higher levels, such as 70 Defence, will provide additional durability and access to the Guthan's Armour Set, which can heal you when dealing melee damage to Spinolyps.

 

Magic:

 

50 Magic is a baseline requirement for a serious attempt. Rex has low Magic Defence (+10), making it easier to land hits with magic. Recommended spells include Iban Blast, Slayer Dart (with the required Slayer level), or Blood Spells (if available).

A charged Staff (such as Staff of the Dead) is a good option for consistent damage.

 

Prayer:

 

Level 45 Prayer grants access to Mystic Might and the critical Protect From Magic prayer. Equip Protect From Magic as you descend into the Kings' room to reduce damage from the other Dagannoth Kings.

 

Defence:

 

If you're planning a longer trip to the dungeon, 70 Defence is beneficial for increased durability and access to Guthan's Set, which offers passive healing by dealing melee damage to Spinolyps.

 

Recommended Gear:

 

Armor: For magic-based combat, Karil's Crossbow or Armadyl Armor could work well for extra defensive stats. You can also use Void Knight gear for the damage bonus.

Magic Weapons: Iban's Staff or Trident of the Seas will work great for Rex's low Magic defense.

 

Strategy for Soloing Dagannoth Rex

1. Entering the Room:

 

Upon entering the boss room, your first task is to safely lure Dagannoth Rex away from the other two Dagannoth Kings. This is crucial because you only want to fight Rex one-on-one.

 

Luring Rex: Head to the right side of the arena upon entering. The other Kings will attack you immediately unless they are distracted. If another King notices you, head back up the ladder, wait for about 30 seconds for the aggression to reset, and try again.

 

2. Set up the Safespot:

 

Once you're in the room and Rex is attacking you, run to the southeast side of the map where there are two piles of bones. Stand in the correct spot so that Rex cannot reach you if he's coming from the west side. This is your safe spot, where you can safely cast spells from a distance.

 

Tip: Avoid standing too close to the piles of bones; position yourself just slightly to the east so that Rex's attacks will miss.

 

3. Battle Rex:

 

From your safe spot, you can now safely deal damage to Rex. Iban Blast or Slayer Dart (if you have the required Slayer level) are optimal spells to use since Rex has low Magic Defence. Blood Spells (such as Blood Barrage) are also fantastic if you have the required Magic level, as they heal you for each hit.

 

Prayers: Activate the Protect From Magic prayer as you enter the arena to reduce damage from the other two Kings. Mystic Might will boost your damage output, so it's a good idea to use it when you have the chance.

 

4. Managing Spinolyps:

 

While fighting Rex, you'll be attacked by Spinolyps, smaller monsters that spawn throughout the fight. Their attacks can add up over time, so it's recommended that you wear Defence armor like Karils to reduce their damage. If you're using Guthan's Armor, every time you kill a Spinolyp, you'll heal a portion of your health, which is especially useful during longer trips.

 

5. Kill Rex Efficiently:

 

Continue to hit Rex with your magic spells while managing the Spinolyps and other distractions. With Protect From Magic active, the damage from the other Kings will be minimal, and your safety spot keep you safe from Rex's attacks.

 

Conclusion

 

Soloing Dagannoth Rex can be highly rewarding, not just for the thrill of the fight but for the potential OSRS Gold and valuable OSRS items you can earn. With careful preparation, efficient combat, and smart management of the Spinolyps and other Dagannoth Kings, you can maximize your profits from Berserker Rings, Dragon Axes, and Dagannoth Bones. Plus, Rex's drops can significantly boost your overall wealth in the game.