Underwater City/Guide
From Melvor Idle
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This content is part of the Atlas of Discovery Expansion.
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| This page was last updated for (v1.2.2). |
Standard Guide
Introduction
This is a 
Barrier dungeon introduced with the 
Atlas of Discovery Expansion, there is a general guide to this dungeon and a more in-depth look into Barrier combat in general in this guide. This page will go deeper into combat options, including when 
Throne of the Herald Expansion is owned and already completed.
This guide is not meant for optimal kills per hour but instead focuses on easily obtainable ways ranging from just passed God Dungeons to having beaten
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Throne of the Heraldto clear the dungeon effectively.
Requirements
- Complete
Cult Grounds - Discover
Melantis 
Damage Reduction Potion IV
Recommended
- Error creating thumbnail: File missingLevel 99,Error creating thumbnail: File missingLevel 95,Error creating thumbnail: File missingLevel 75,Error creating thumbnail: File missingLevel 99.
The enemies, and especially the
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Nagaia hit very hard in this dungeon. A lot of damage reduction is required in order to idle this dungeon without dying. Alternatively, the player can return after having progressed through the Throne of the Herald expansion. Having more hitpoints or other damage reducing and damage inflicting bonusses can greatly speed up the clear times of this dungeon. Set 1 clears the dungeon roughly 27 times per hour. Set 2 clears it roughly 8.5 times per hour. (You can swap the weapon & summons in Set 2).
The Preferred Shield is 
Earth Layered Shield, however 
Devouring Barrier Shield can be used, once the upgrade item has been obtained from this dungeon.
Clearing the Underwater City dungeon provides 1 
Barrier God Shard every time it is cleared. These can be used to upgrade (B) god armours into their respective (C) armours. These can then be used to very effectively clear
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Crystal Depths for 
Crystal Binding Dust if the player hasn't already done this.
Equipment
Below are 2 sets, unlike the previous dungeons, you can't mix and match this dungeon. Set 1 is for post-TotH clears. Set 2 is for clears just before or after
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Impending Darkness Event.
Set 1 requires
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Level 120.
Set 2 requires a minimum of
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Level 99. Calculated at all combat skills level 99 in the Combat Simulator.
Set 2 can be all non-B upgraded Terran God Armour and it will only lower the Kills Per Hour by about 2 (from 8.5 to 6.5).
Prayers:
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Battleheartand
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Battleborn. Swap to
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Battleheartand
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Chivalryfor Set 2.
Potion: Damage Reduction Potion IV
Point of Interest: 
Dark Waters
Agility
The Agility obstacles 9 or higher are not required, 8 and below are highly suggested (and simulations were done with those active).
| Slot | Obstacle | Bonuses |
|---|---|---|
| 1 | Error creating thumbnail: File missing Cargo Net | +3% Global GP (except Item Sales) +2% Fishing Mastery XP |
| 2 | Error creating thumbnail: File missing Monkey Bars | -4% Firemaking Interval |
| 3 | Error creating thumbnail: File missing Pipe Climb | +5% Melee Evasion +5% Melee Max Hit |
| 4 | Error creating thumbnail: File missing Cave Climb | -40 Maximum Hitpoints +5% Ammo Preservation +5% Rune Preservation +5% Melee Max Hit |
| 5 | Error creating thumbnail: File missing Cliff Balance | +20 Maximum Hitpoints +5% Ranged Accuracy Rating +2 Prayer Point Cost for Prayers +5% Magic Accuracy Rating +5% Melee Accuracy Rating |
| 6 | Error creating thumbnail: File missing Lake Swim | +1% Damage Reduction +5% Damage To All Monsters +3% Chance To Preserve Prayer Points |
| 7 | Error creating thumbnail: File missing Boulder Trap | -20% Chance to Preserve Resources in Skills |
| 8 | Error creating thumbnail: File missing Raft Building | +20 Maximum Hitpoints +2% Damage To All Monsters +1% Damage Reduction |
| 9 | Error creating thumbnail: File missing Ice Jump | +20 Maximum Hitpoints +5% Food Healing Value +5% Chance to Double Items Globally +10 Mining Node HP +10% Chance to Preserve Resources in Skills |
| 10 | Error creating thumbnail: File missing Dragon Fight | -16% Auto Eat Efficiency -0.3s Monster Respawn Timer |
| 11 | Error creating thumbnail: File missing Frozen Maze | +1% Damage Reduction -0.1s Monster Respawn Timer -3 Prayer Point Cost for Prayers -20% Rune Preservation -20% Ammo Preservation |
| 12 | Error creating thumbnail: File missing Boulder Balance | -20% Global Accuracy +5% of Maximum Hit added to Minimum Hit -0.1s Attack Interval |
| 13 | Error creating thumbnail: File missing Balance Trap | +10% Agility Interval +5% Chance to Double Items Globally -30% GP gained from Agility |
| 14 | Error creating thumbnail: File missing Freezing Climb | +30% Accuracy Rating +30% Global Evasion -150% GP from Combat -6% Chance To Double Loot in Combat +15% Damage to Monsters in Dungeons |
| 15 | Error creating thumbnail: File missing Waterfall Crossing | -100 Maximum Hitpoints Your Attacks now roll twice (Select highest chance) -10% Global Slayer Coins (except Item Sales) |
| Pillar | Error creating thumbnail: File missing Pillar of Combat | +10% Ranged Evasion -0.2s Monster Respawn Timer +5% Flat Slayer Area Effect Negation +10% Melee Evasion +10% Magic Evasion +5% of Maximum Hit added to Minimum Hit +10 Flat HP Regen |
| Elite Pillar | Error creating thumbnail: File missing Elite Pillar of Expertise | +8% Mastery XP for Melvor Realm only -3% Interval for all Non-Combat Skills +40% Global GP (except Item Sales) +8% Chance to Double Items Globally |
Ancient Relics Guide
There are two different ways of approaching this Dungeon.
The first would be to just get the Dungeon over with as soon as possible to get your Skill Cap Increases and gain access to
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Impending Darkness Event. This would include not grinding out 
Underwater Ruins for it's weapons.
The second would be to obtain at least 
Engulfing Vortex Longbow, which would actually be advised.
Water Pulse Staff is also a very good weapon which will last until
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Level 120, even if it is slightly worse than
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Runecraftingalternatives but would not require you to level
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Runecrafting above around Level 85.
When grinding out the Underwater Ruins weapon(s) it is advised to start with Engulfing Vortex Longbow and craft up (B) versions of God Armour along the way. This would also require
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Level 99.
It is advised to upgrade Terran God Armour first, particularly the Boots, Leggings and Platebody. The Helm and Gloves will be replaced at a later point with the 
Necromancers Palace Summon Set and thus have a lower priority to be upgraded at this point.
When crafting 
Imbued Dragonite Bar it is highly advised to get as much +1 additional resource chance as possible (Relic #3 50%, 
Mining Lantern 30%, 
Ragnar Dungeon Ruins 10/20%, 
Magic Anvil 10%), as well as getting the stacking/separate extra resource modifier from the
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Ent 
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Salamander Synergy.
When all these buffs are obtained, it should lower the amount of 
Barrier Dust needed for a complete set from 96,000 to roughly 43,600.
When going for the second option, making the choice to do the Underwater Ruins grinding before 
Underwater City can be worth it as you also gain (B) God Armour from doing this, making the clear speed on Underwater City faster.
Contrary to all previous Dungeons, some minor
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Astrologyinvestment is highly recommended. Specifically obtaining the 8% Accuracy stars in the Constellations
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Iridan,
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Terra,
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Vale,
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Sylliaand
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Arachi. The Master Relic will not be required, nor will any other Stars.
Due to the regen mechanics of both the Barrier and Health of the boss, it would be advised to Manual Eat as little as possible, for this reason as much Damage Reduction as possible will be packed on for this Dungeons Boss
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Nagaia.
because of the high regen capabilities of the Monsters Barrier it is highly recommended to follow the Combat Triangle, this means a
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Rangedsetup for waves 1 and 2, Melee for waves 3 and 4,
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Magicsetup for waves 5 and 6,
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Ranged for waves 7 and 8, and finally Melee for the 9th and final wave. Active switching styles is highly recommended as the Dungeon will go much faster this way. A setup for each combat style is included in this guide.
It is entirely possible to do this Dungeon completely Idle at this point, it however depends greatly on which Relics have been obtained.
Melee
This is the setup that will be used for the boss, attempting any other style will result in Death at this stage.
It will require at least 70% Damage Reduction and 1010
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HP or 71% if you're want to be 100% safe. (70% has roughly 0.004 Deaths per hour, 71% eliminates the Death Chance entirely)
You can replace 
Fury of the Elemental Zodiacs and 
Tormented Ring with any combination of Amulet and Ring of choice as long as 2/3% Damage Reduction is gained from those 2 Item Slots combined.
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Defence Relic #5 provides a bite more wiggle room replacing the need for Damage Reduction from either Amulet or Ring, if this Relic is obtained it 
Adaptive Summoning Amulet and Tormented Ring would be the best options.
Gear
Sunset Rapier or 
Ancient Claw can be used instead of 
Infernal Claw for slightly lower clear speed.
Potion: Damage Reduction Potion IV
Prayers:
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Chivalry&
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Battleheart
Point of Interest: Dark Waters
Agility
| Slot | Obstacle | Bonuses |
|---|---|---|
| 1 | Error creating thumbnail: File missing Cargo Net | +3% Global GP (except Item Sales) +2% Fishing Mastery XP |
| 2 | Error creating thumbnail: File missing Rope Jump | +3% Smithing Mastery XP |
| 3 | Error creating thumbnail: File missing Pipe Climb | +5% Melee Evasion +5% Melee Max Hit |
| 4 | Error creating thumbnail: File missing Coal Stones | -4% Skill XP for all Skills +10% Food Healing Value +20% GP gained from Thieving +3% Chance to Preserve Resources in Skills |
| 5 | Error creating thumbnail: File missing Cliff Balance | +20 Maximum Hitpoints +5% Ranged Accuracy Rating +2 Prayer Point Cost for Prayers +5% Magic Accuracy Rating +5% Melee Accuracy Rating |
| 6 | Error creating thumbnail: File missing Lake Swim | +1% Damage Reduction +5% Damage To All Monsters +3% Chance To Preserve Prayer Points |
Combat Simulator Export
To view the different monsters within the simulator, press the "Inspect" button, a new windows will appear, select the desired monster from that new window.
Ranged
Used for waves: 1,2,7,8
The
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Ranged requirements are much lower than Melee and require much less in terms of investment.
Siphoning Barrier Gem can be replaced with either 
Draining Barrier Gem or 
Eroding Barrier Gem with little impact on Clear Speed.
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Ancient Crossbow has about 50% faster Clear Times than 
Dragon Crossbow.
Gear
Potion: Damage Reduction Potion IV
Prayers:
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Sharp Vision&
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Battleheart
Point of Interest: 
Bandit Hideout (not required to switch from Dark Waters, the benefits on these Monsters is very small)
| Slot | Item |
|---|---|
 |  Aeris God Helmet |
 |  Aeris God Platebody |
 |  Aeris God Platelegs |
 |  Aeris God Boots |
 |  Aeris God Gloves |
 |  Ancient Infernal Cape |
 |  Lesser Summoning Amulet |
 |  Deadeye Ring |
 |  Eroding Barrier Gem |
 |  Dragon Crossbow |
 |  Scaled Shield |
 |  Emerald Bolts |
 |  Elder Crown |
 |  Ranged Hinder Scroll |
 |  Tortoise Error creating thumbnail: File missing Dragon |
Agility
| Slot | Obstacle | Bonuses |
|---|---|---|
| 1 | Error creating thumbnail: File missing Cargo Net | +3% Global GP (except Item Sales) +2% Fishing Mastery XP |
| 2 | Error creating thumbnail: File missing Rope Jump | +3% Smithing Mastery XP |
| 3 | Error creating thumbnail: File missing Pipe Climb | +5% Melee Evasion +5% Melee Max Hit |
| 4 | Error creating thumbnail: File missing Coal Stones | -4% Skill XP for all Skills +10% Food Healing Value +20% GP gained from Thieving +3% Chance to Preserve Resources in Skills |
| 5 | Error creating thumbnail: File missing Cliff Balance | +20 Maximum Hitpoints +5% Ranged Accuracy Rating +2 Prayer Point Cost for Prayers +5% Magic Accuracy Rating +5% Melee Accuracy Rating |
| 6 | Error creating thumbnail: File missing Lake Swim | +1% Damage Reduction +5% Damage To All Monsters +3% Chance To Preserve Prayer Points |
Combat Simulator Export
To view the different monsters within the simulator, press the "Inspect" button, a new windows will appear, select the desired monster from that new window.
Magic
Used for waves: 5, 6
The
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Magic requirements are much lower than Melee and require much less in terms of investment.
Siphoning Barrier Gem can be replaced with either Draining Barrier Gem or Eroding Barrier Gem with little impact on Clear Speed.
Cloudburst Staff has about 50% faster Clear Times than 
Magic Wand (Elite)
(G) Rune Shield.
Gear
Spell:
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Fire Surgeor
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Water Surge with Cloudburst Staff
Potion: Damage Reduction Potion IV
Curse:
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Anguish IIIAurora:
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Surge II(Optional) Prayers:
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Mystic Mastery&
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Battleheart
Point of Interest: 
The Academia Arcanum (not required to switch from Dark Waters, the benefits on these Monsters is very small)
Agility
| Slot | Obstacle | Bonuses |
|---|---|---|
| 1 | Error creating thumbnail: File missing Cargo Net | +3% Global GP (except Item Sales) +2% Fishing Mastery XP |
| 2 | Error creating thumbnail: File missing Rope Jump | +3% Smithing Mastery XP |
| 3 | Error creating thumbnail: File missing Pipe Climb | +5% Melee Evasion +5% Melee Max Hit |
| 4 | Error creating thumbnail: File missing Coal Stones | -4% Skill XP for all Skills +10% Food Healing Value +20% GP gained from Thieving +3% Chance to Preserve Resources in Skills |
| 5 | Error creating thumbnail: File missing Cliff Balance | +20 Maximum Hitpoints +5% Ranged Accuracy Rating +2 Prayer Point Cost for Prayers +5% Magic Accuracy Rating +5% Melee Accuracy Rating |
| 6 | Error creating thumbnail: File missing Lake Swim | +1% Damage Reduction +5% Damage To All Monsters +3% Chance To Preserve Prayer Points |
Combat Simulator Export
To view the different monsters within the simulator, press the "Inspect" button, a new windows will appear, select the desired monster from that new window.
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| Melvor Idle version v1.3.1 (Released: 30th October 2024) |
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| Skills: Error creating thumbnail: File missing Farming • Error creating thumbnail: File missing Township • Error creating thumbnail: File missing Woodcutting • Error creating thumbnail: File missing Fishing • Error creating thumbnail: File missing Firemaking • Error creating thumbnail: File missing Cooking • Error creating thumbnail: File missing Mining • Error creating thumbnail: File missing Smithing • Error creating thumbnail: File missing Thieving • Error creating thumbnail: File missing Fletching • Error creating thumbnail: File missing Crafting • Error creating thumbnail: File missing Runecrafting • Error creating thumbnail: File missing Herblore • Error creating thumbnail: File missing Agility • Error creating thumbnail: File missing Summoning • Error creating thumbnail: File missing Astrology • Error creating thumbnail: File missing Alternative Magic • Error creating thumbnail: File missing Cartography • Error creating thumbnail: File missing Archaeology • Error creating thumbnail: File missing Harvesting
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| Other: Error creating thumbnail: File missing Beginners Guide •  Guides • Error creating thumbnail: File missing Bank • Error creating thumbnail: File missing Combat • Error creating thumbnail: File missing Mastery • Error creating thumbnail: File missing Money Making • Error creating thumbnail: File missing Shop •  Easter Eggs •  Pets • Error creating thumbnail: File missing Golbin Raid • Error creating thumbnail: File missing Full Version • Throne of the Herald •  Atlas of Discovery • Error creating thumbnail: File missing Into the Abyss
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| Reference Tables: Items, Equipment, Experience Table, Upgrading Items, Combat Areas, Slayer Areas, Dungeons, Strongholds, The Abyss, Monsters |
