Infernal Stronghold/Guide

There three main reasons for completing the

Why Clear Infernal Stronghold?

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:

Clear it once after 100
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Volcanic Caves to get the Infernal Cape that has 4% DR.
Clear it 10 times to get 10 Infernal Cores to complete a township task, and to merge Dragon Claw and Ancient Claw into Infernal Claw.
Clear it 100+ times to complete more township tasks, or earn a lot of .

Pre-Ancient Build

The guide provides a build that does not use any ancient armour and will require manual eating to survive. This build should be able to get you though the dungeon one time, but you will need to time your eating carefully, especially when you are stunned.

This build can achieve that with as low as

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Level 80

, but if you are attempting this dungeon under levelled then it is recommended that you check the Combat Simulator to see if there are any improvements that can be made, especially if you are in . Improvements that give a higher DR, higher HP or higher auto-eat threshold will give you a better chance of survival. Improvements that give a stronger attack will reduce the time taken to complete the dungeon, but are secondary to DR improvements.

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Level 80
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Level 80
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Level 80
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Level 80
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Level 80
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Level 75
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Auto Eat - Tier III

Slot	Item	DR%
	(G) Rune Helmet	5%
	(G) Rune Platebody	5%
	(G) Rune Platelegs	5%
	(G) Rune Boots	5%
	Paladin Gloves	4%
	Fire Cape	2%
	Elite Amulet of Defence	2%
	Silver Diamond Ring	1%
	Sunset Rapier	0%
	(G) Rune Shield	5%
Total		34%

Use
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Stone Skin and
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Chivalry (or better) for 3% DR and accuracy.
Use Witch level 4 and Yak level 3 synergy to give extra 2% DR against ranged.
Equip Damage Reduction Potion III (or higher) for improved DR.

Ancient Build

This build is designed to make it easier to obtain the 10 Infernal Core and allows you to complete the dungeon without manual eating. However, this build is not recommended for idling as it will use a lot of resources. This build increases DR so that auto-eat makes the dungeon survivable, but also has a reasonable attack level.

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Level 90
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Level 90
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Level 90
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Level 90
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Level 75
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HP 940 OR
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HP 920 if
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Leonardo has been obtained.

Slot	Item	DR%
	(G) Ancient Helmet	7%
	(G) Ancient Platebody	7%
	(G) Ancient Platelegs	7%
	(G) Rune Boots	5%
	Paladin Gloves	4%
	Fire Cape	2%
	Elite Amulet of Defence	2%
	Silver Diamond Ring	1%
	Ancient Claw	0%
	(G) Ancient Shield	7%
Total		42%

Use
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Stone Skin and
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Chivalry for 3% DR and an increase in accuracy.
Use Witch level 4 and Yak level 3 synergy to give extra 2% DR against ranged.
Equip Damage Reduction Potion IV for 10% DR.

Gear Options

There are many options with this build:

Equip the Infernal Cape after the first clear to further increase DR, and will make it easier to get the 10 Infernal Core needed to get the Infernal Claw.
Use Ancient Claw over the Sunset Rapier. If you do not have the Ancient Claw then check out the Ancient Claw Guide.
Use Sandstorm Ring to increase your dungeon clear time if you DR is sufficient.
Use Dragonfire Shield over the Ancient Shield for better defence.
Once you can survive, use stronger prayers to increase your accuracy at the expense of DR.
Use Diamond Luck Potion (any level) to give an attack advantage, but only if you can survive the dungeon easily - you will lose up to 10% DR.

Malcs Special Moves

When eating, pay special attention to the following special moves from Malcs:

Sealing + Penetrating Claws: do not underestimate this combo. The Spam Eating kicks in with a delay after you push a keyboard button, so it is important that you start before the Penetrating Claws hit you. This special move has two instances of damage separated by a short gap, so a good idea to use Spam Eating. The damage from Penetrating Claws is calculated as [math]\displaystyle{ 640 \times (1-\text{DR}) \times 1.3 \times 2 }[/math].

Sealing + Tail Whip: Heal to full HP before this hits, and if you have time, look what the max damage of the Tail Whip is when you are stunned. You may find that you can delay manual eating depending on whether your HP allows. The damage from this move can be calculated as [math]\displaystyle{ 690 \times (1-\text{DR}) \times 1.3 }[/math].

Sealing + Usual Attack: Occurs when Malcs uses two Sealing attacks in row. The approach given in Tail Whip works well here.

Sealing + Inferno: Not as strong as the other attacks, and one that you can normally rely on
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Auto Eat to survive.

Idling Build

This build relies on high DR and a high HP and the top tier of

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Auto Eat

and uses melee as this gives a high amount of damage reduction (DR). If your consumables run out, then you will not survive, so be sure that you have enough in the bank before you begin idling.

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Level 90
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Level 80
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Level 90 with
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Level 50 Damage Reduction Potion
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Level 65 with Witch level 4 and Yak level 3.
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Auto Eat - Tier III

Slot	Item	DR%
	(G) Ancient Helmet	7%
	(G) Ancient Platebody	7%
	(G) Ancient Platelegs	7%
	(G) Dragon Boots	6%
	(U) Ancient D-hide Vambraces	6%
	Infernal Cape	4%
	Elite Amulet of Defence	2%
	Silver Diamond Ring	1%
	Ancient Claw	0%
	Dragonfire Shield	8%
	Error creating thumbnail: File missing Yak	0%
	Error creating thumbnail: File missing Witch	0%
Total		48%

Boost	Type	DR%
Armour/weapons (as above)	Error creating thumbnail: File missing Melee	48%
Error creating thumbnail: File missing Safeguard	Error creating thumbnail: File missing Prayer	1%
Error creating thumbnail: File missing Stone Skin	Error creating thumbnail: File missing Prayer	3%
Damage Reduction Potion III	Error creating thumbnail: File missing Potions	6%
Error creating thumbnail: File missing Yak + Error creating thumbnail: File missing Witch	Error creating thumbnail: File missing Familiar Synergy	2% against Error creating thumbnail: File missing Melee
Total		61% (60%)

The Prayer Scroll or Alchemist's Bag can be used to reduce prayer costs and the number of potions needed to idle the Infernal Stronghold.

Alternative options are available if the

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Air God Dungeon

has been completed. The Aeris God Gloves and Aeris God Boots each give an additional 2% DR. The Infernal Cape can be swapped for the Fire Cape but this will lose 2% DR. In

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Agility

the

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Lake Swim

can be used to give an extra +1% DR.

Once you have sufficient DR to idle comfortable, you can also consider wearing the Chapeau Noir for a 10% chance of doubling the items received, which can reduce the number of dungeons needed.

Bonuses that improve HP

Bonuses from Agility Obstacles and certain items can reduce the amount of DR required considerably by increasing your maximum HP.

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Level 20
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Level 70
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Level 20
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Level 20
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Level 60
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Level 60
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Level 80
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Level 80

Item	Position	+HP
Error creating thumbnail: File missing Cliff Balance¹	Slot 5 Obstacle	+20
Error creating thumbnail: File missing Rocky Waters	Slot 6 Obstacle	+50
Error creating thumbnail: File missing Raft Building	Slot 8 Obstacle	+20
Error creating thumbnail: File missing Ice Jump	Slot 9 Obstacle	+20
Dragonfire Shield	Off-hand	+30
Finn, the Cat²	N/A	+10
Total		+140

Notes:

The
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Cliff Balance will use +2 extra prayers each hit
Without Finn you will lose out on roughly 1% DR

For example, a

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Level 90

with all of the extra HP listed above, would drop the overall DR requirement from 59% down to 53%. Lower DR means that you reduce the use of potions, Prayers and the

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Witch

summon. When combined with all of the equipment improvements mentioned earlier results in a lower minimum HP of around

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Level 76

.

Late-game idling

After completing the

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Water God Dungeon

you will have access to Ancient Magicks and late-game armour and boosts. The dungeon can be idled with magic much more quickly due to the Combat Triangle advantage. For example, with this build, there is no need for any consumable except food and runes, and no need for boosts from agility. The spare slots in this build are filled with item doubling boosts, but you can change these depending on your goal.

Slot	Item	DR%
	Chapeau Noir	0%
	Glacia God Platebody	8%
	Glacia God Platelegs	8%
	Glacia God Boots	8%
	Glacia God Gloves	8%
	Skull Cape	3%
	Elite Amulet of Magic	2%
	Ring of Wealth	0%
	Fire Imbued Wand	0%
	Scaled Shield	8%
Total		45%

Spell:

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Slicing Winds

Prayers:

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Mystic Lore

&

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Mystic Mastery

if your accuracy is below 20,000. Otherwise don't use any.

There is flexibility on this build. For example, Aorpheat's Signet Ring can be used instead of Ring of Wealth to get an additional 100,000 + per clear, but this reduces chance of doubling Infernal Cores e.g. from 10% down to 5% chance.