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This article is about the guide for Infernal Stronghold. For the dungeon itself, see
Infernal Stronghold.
Why Clear Infernal Stronghold?
There three main reasons for completing the 
Infernal Stronghold:
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 
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.
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.
Level 90
Level 90
Level 90- Level 90
Level 90
Level 75
Gear Options
There are many options with this build:
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
Auto Eat to survive.
Idling Build
This build relies on high DR and a high HP and the top tier of 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.
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 
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 
Agility the 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.
- Level 20
- Level 70
Level 20
Level 20
Level 60
Level 60
Level 80- Level 80
Notes:
- The Cliff Balance will use +2 extra prayers each hit
- Without
Finn you will lose out on roughly 1% DR
For example, a 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 
Witch summon. When combined with all of the equipment improvements mentioned earlier results in a lower minimum HP of around Level 76.
Late-game idling
After completing the 
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.
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.
Volcanic Caves to get the 
Dragon Claw and 
Ancient Claw into 
Infernal Claw.
Auto Eat - Tier III
(G) Dragon Helmet
(G) Dragon Platebody
(G) Dragon Platelegs
(G) Dragon Boots
Paladin Gloves
Fire Cape
Elite Amulet of Defence
Silver Diamond Ring
Sunset Rapier
(G) Dragon Shield
Stone Skin and 
Chivalry (or better) for 3% DR and accuracy.
Witch level 4 and 
Yak level 3 synergy to give extra 2% DR against ranged.
Damage Reduction Potion III (or higher) for improved DR.
(G) Ancient Helmet
(G) Ancient Platebody
(G) Ancient Platelegs
Aeris God Gloves
Ancient Claw
(G) Ancient Shield
Redemption (or better) for 3% DR and an increase in accuracy.
Damage Reduction Potion IV for 10% DR.
Sunset Rapier. If you do not have the 
Sandstorm Ring to increase your dungeon clear time if you DR is sufficient.
Dragonfire Shield over the 
Ancient Shield for better defence.
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.
Level 90 with 
Level 50 Damage Reduction Potion
Level 65 with 
(U) Ancient D-hide Vambraces
Infernal Cape
Dragonfire Shield
Yak
Safeguard
Chapeau Noir
Glacia God Platebody
Glacia God Platelegs
Glacia God Boots
Glacia God Gloves
Skull Cape
Ring of Wealth
Fire Imbued Wand
Scaled Shield
Combat:
