Dark Waters/Guide

T90 Farming

Following completion of

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, you now have access to

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, the penultimate slayer area. These 3 mobs drop fragments for the T90 weapons, the highest level, and often most powerful, weapons in the game that are extremely helpful in completing the following slayer area, as well as the Impending Darkness Event. These are extremely long grinds, and require quite a bit of preparation. Each weapon requires 100 fragments, and the fragments have a 2% drop rate. That's 5,000 kills on average.

We recommend acquiring them while fighting each monster as a slayer task, this will require you to turn OFF auto-slayer, and will encourage semi-frequent check-ins. Doing these on task will increase your damage dealt to them from various buffs, namely Slayer Skillcape. This will make the order you obtain the final weapons in effectively random, but if you want to do them in a specific order, we recommend the following:

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Shockwave - Made from Shockwave Fragment, dropped by Rokken
Ocean Song - Made from Ocean Song Fragment, dropped by Ku-tul
Tidal Edge - Made from Tidal Edge Fragment, dropped by Umbora

Additionally, you should also acquire the pet

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Otto

whilst doing this grind, if you do not, continue farming whichever mob you kill the fastest on or off task until you get it.

Item fragments are very rare drops, and you should attempt to sneak in as much item doubling into your gear as possible. Using Combat Sim to measure your Drops/hr with no deaths is highly recommended. It can make the difference in literal days of grinding.

Order

There are a couple of different orders in which these weapons are normally obtained.

While it may seem that using these weapons to farm the other weapons would be beneficial, this is often not the case due to the relatively weak power level of Tidal Edge and Ocean Song compared to other available weapons.

The common orders are:

-

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Shockwave

then Ocean Song then Tidal Edge - Tidal Edge then

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Shockwave

then Ocean Song

Between those two, the required time is roughly equal, but the second one requires more runes.

Many people combine the grinding of these weapons with the grind for the master slayer gear. An added benefit is the increased damage given by the Slayer Skillcape and buffs from

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Astrology

while fighting slayer tasks. Another benefit is the ability to buy prayer points, Light Runes, and Food at a profit with the use of Generous Resupply.

Requirements

There are very few hard requirements beyond the ability to survive and the entry requirement of

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Slayer Level 90

, but there are several skills and items that will make this grind significantly easier, and we would be remiss to not mention them

Suggestion	Benefit
Slayer Skillcape	25% Flat Slayer Area Effect Negation
Error creating thumbnail: File missing Level 99	Less need for DR
Error creating thumbnail: File missing Level 99	Pillar of Combat
Error creating thumbnail: File missing Level 90	Dragon Synergies
Error creating thumbnail: File missing Level 95	Error creating thumbnail: File missing Battleheart
Slayer Helmet (Elite)	15% Flat Slayer Area Effect Negation
Slayer Cowl (Elite)	15% Flat Slayer Area Effect Negation
Infernal Claw	Outpaces Rokken's stun
Cloudburst Staff	Highest damage weapon in the game
Slayer's Crossbow	Highest damage non-T90 ranged weapon for slayer

Below are some gear suggestions. Depending on

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Prayer

,

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Potions

, and

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Agility

buffs, your optimal gear can change.

Tidal Edge

To be able to idle Umbora with

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Magic

, you'll need 47 DR assuming you have 1000 HP. Umbora can be killed with Normal Magic if you have a Cloudburst Staff or an Ocean Song, or with Ancient Magicks at a much slower rate. Note that Cloudburst is the fastest method, even if you have to squeeze in extra DR from Guardian Ring or

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Prayer

With Cloudburst Staff, use

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Water Surge

or

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Water Wave

(reduced rune cost),

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Anguish III

, and

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Fury II

. With Ocean Song, use

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Fire Surge

,

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Anguish III

, and

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Surge II

. With an Air Imbued Wand or a Fire Imbued Wand, use

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Gust

or

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Incinerate

and

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Surge II

.

Use of Combination Runes is highly recommended for all methods.

Slot	Better to Worse
Head	Glacia God Helmet	Slayer Wizard Hat (Master)
Body	Glacia God Platebody	Slayer Wizard Robes (Master)
Leggings	Glacia God Platelegs
Boots	Glacia God Boots
Hands	Glacia God Gloves
Cape	Maximum Skillcape	Slayer Skillcape
Neck	Fury of the Elemental Zodiacs	Elite Amulet of Magic	Warlock Amulet
Passive	Chapeau Noir	Ring of Wealth	Aorpheat's Signet Ring
Ring	Ring of Wealth	Warlock Ring	Guardian Ring
Weapon	Cloudburst Staff	Air Imbued Wand	Magic Wand (Elite)
Offhand	Cloudburst Staff	Scaled Shield	Earth Layered Shield

Slayer Wizard Hat (Master) and Slayer Wizard Robes (Master) do not positively impact the amount of fragments you receive, and even if available, should not be used if your goal is to collect fragments.

Ocean Song

To be able to idle Ku-tul with

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Ranged

, you'll need 48 DR assuming you have 1,000 HP. You'll be killing Ku-tul with either a

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Shockwave

, Slayer's Crossbow or an

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Ancient Crossbow

. Use of Jadestone Bolts is recommended, Emerald Bolts are not recommended as jadestone bolts should be plentiful enough at this point in progression.

Slot	Better to Worse
Head	Slayer Cowl (Master)		Slayer Cowl (Elite)
Body	Slayer Leather Body (Master)		Aeris God Platebody
Leggings	Aeris God Platelegs			(U) Ancient D-hide Chaps
Boots	Aeris God Boots			Sand Treaders
Hands	Aeris God Gloves			(U) Ancient D-hide Vambraces
Cape	Maximum Skillcape		Slayer Skillcape
Passive	Chapeau Noir	Ring of Wealth
Neck	Deadeye Amulet	Fury of the Elemental Zodiacs		Elite Amulet of Ranged
Ring	Ring of Wealth	Aorpheat's Signet Ring		Guardian Ring
Weapon	Slayer's Crossbow			Error creating thumbnail: File missing Ancient Crossbow
Offhand	Scaled Shield	Dragonfire Shield		Earth Layered Shield
Ammo	Jadestone Bolts	Emerald Bolts		Ruby Bolts

40% slayer area reduction increases your dps against Ku-tul, and therefore, unless it will lead to your untimely demise, at least a Slayer Cowl (Elite) should be used.

Slayer Cowl (Master) and Slayer Leather Body (Master) positively impact the amount of fragments you receive, and if available, should be used.

Shockwave

While the other two weapons are pretty straightforward in terms of gear, the

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Shockwave

is not.

Rokken is by far the most dangerous and is both willing, and able to kill you if you are not extremely careful in your setup. This monster is able to buff itself to an attack speed of 2.2s, and is able to stun you, which massively increases its damage against you. Your goal here is either to be able to survive the increased stun damage, or to never actually take the stun damage by having an equivalent or faster attack speed than the monster.

You need to use Melee for this grind, and as said before, it is highly recommended that you use an Infernal Claw to complete this. Tidal Edge is too slow to reliably survive Rokken's stun without significant extra work, requiring you to put on more DR that will massively affect your kill time. Assuming you were able to use the exact same setup with no

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Astrology

buffs, Infernal Claw is only 1-2% slower than Tidal Edge. Adding buffs from

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Astrology

, adding the additional DR or attack interval reduction required for Tidal Edge, and using summoning combat familiars invert this difference and make Tidal Edge up to 20% slower with no tangible benefit.

Slot	Better to Worse
Head	Slayer Helmet (Master)		Slayer Helmet (Elite)
Body	Slayer Platebody (Master)		Ragnar God Platebody	Terran God Platebody
Leggings	Ragnar God Platelegs		Terran God Platelegs
Boots	Ragnar God Boots		Terran God Boots
Hands	Ragnar God Gloves		Terran God Gloves
Cape	Maximum Skillcape		Slayer Skillcape
Passive	Fighter Amulet		Chapeau Noir
Neck	Fury of the Elemental Zodiacs		Fighter Amulet
Ring	Ring of Wealth	Aorpheat's Signet Ring	Ring of Blade Echoes	Guardian Ring
Weapon	Infernal Claw
Offhand	Dragonfire Shield		Earth Layered Shield

The Fighter/ FEZ is the best passive/neck setup, even beating out the item doubling from Chapeau Noir. Note that wearing FEZ is required to wear Master Slayer armor.

One major note is that the Ring of Blade Echoes is marginally faster for fragments/h than all other rings, however, due to its interaction of significantly increasing your use of consumables like Prayer Points and Potions, it is lower on the rankings.

Slayer Helmet (Master) and Slayer Platebody (Master) positively impact the amount of fragments you receive, and if available, should be used.

For this set-up to work safely without risk of death, the player's attack interval while in combat with this enemy must be less than or equal to 2.2 seconds, as this means the player is quick enough to avoid taking extra damage when Rokken attacks with the Shockwave special attack. To achieve this, we use a weapon that has a base 2.2s interval, and gather 40% total slayer area negation through Slayer Skillcape and Slayer Helmet (Elite).

Check your setup with the Combat Simulator before engaging Rokken.

At 1,000 HP, which can be achieved with

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Level 97

and +30 HP from Dragonfire Shield, this method requires 48% Damage Reduction.