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Cronus, the World Hydra

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This article is about the monster. For the soldier, see Cronus, The World Hydra
Cronus boss

Cronus, the World Hydra was the third monster ever made available to fight. It can be summoned on the Alchemy Summons page if you have a Serpentine Shield and are at least level 90.

You have 168 hours to complete the battle before it flees.

Basic Information

Cronus, the World Hydra has 125,000,000 health. Up to 130 people total may participate in the battle. Of these participants, only a set number can participate based on that player's level at the time of joining the battle.

  • 30 people levels 91+
  • 30 people levels 61-90
  • 30 people levels 31-60
  • 40 people levels 1-30

Special Information

Siege Weapons

While fighting Cronus, there are 5 siege weapons that can be launched to deal extra damage.
All Siege Weapons hit Cronus and are unaffected by blocks and resistances.
*Cronus has 125,000,000 HP

Name Clicks Damage Dealt

%HP Dealt*

Hydra siege small1 Catapult 10 8,844,000 dmg
884,400 dmg/click
7.08 %
0.71 % per click
Hydra siege small2 Ballista 20 10,184,000 dmg
509,200 dmg/click
8.15 %
0.41 % per click
Hydra siege small3 Cannons 30 12,864,000 dmg
428,800 dmg/click
10.29 %
0.34 % per click
Hydra siege small4 Blizzard 40 22,204,000 dmg
555,100 dmg/click
17.76 %
0.44 % per click
Hydra siege small5 Firestorm 50 35,704,000 dmg
714,080 dmg/click
28.56 %
0.57 % per click
Totals 150 89,800,000 dmg
598,667 dmg/click
71.84 %
0.48 % per click

Attacking Cronus

Cronus Power Attack Damage Formula

Note: The following is inaccurate, but should give you a general idea of what kind of damage you will do against Cronus.  To help us get the accurate numbers for damaging Cronus, please help out our POWER project.

Minimum Damage ~7,000
X 32
Random Damage 60

7,000 + (32 * (Attack Stat + Active General Attack Power + Equipment Attack Power + Magic Attack Power)) + (up to 60) = Damage Dealt


Cronus Summoned

What have you done?!?

"Hissssss! Who dares to wake me from my slumber? I am Cronus! You? You tiny humans dare wake me? Well you will soon become my dinner!"

Defeat Cronus, The World Hydra before he overtakes you and your keep. Attack Cronus, The World Hydra now! You have summoned the Cronus, The World Hydra, now request for assistance with this battle with a call to arms!

Cronus Slain

"ROOOOOOAAAAAAAARRRRRRRRR!" the final hydra head roars as your blade pierces the soft underside of its neck. Cronus writhes in pain and starts to quiver. Cronus's head starts to waver back and forth as it struggles to maintain upright. You gather strength in your tired legs and step back as you fear Cronus might collapse directly onto you. Suddenly Cronus's eyes roll back into the back of its head. The massive body crashes to the ground and creates a thunderous roar that sends shockwaves through the earth.

Cronus lies motionless. It's finally dead! You and your army rejoice. It was a long battle and many good soldiers were lost but the threat is over. VICTORY!!


Rewards After Slaying Cronus

Hydra dead

Uncommon Drops Rare Drops Epic Drops

Fire Elemental Fire Elemental
Soldier: Attack:8 Defense:5
Death Knight Death Knight
Soldier: Attack:9 Defense:6
Griffin Griffin
Soldier: Attack:6 Defense:6
Valerian Guard Valerian Guard
Soldier: Attack:7 Defense:9
Dwarven Battlemaster Dwarven Battlemaster
Soldier: Attack:9 Defense:7
Mercenary Mercenary
Soldier: Attack:5 Defense:3
Orc Grunt Orc Grunt
Soldier: Attack:7 Defense:5

Dragonbane Dragonbane
Weapon: Attack:5 Defense:5
Dragon Charm Dragon Charm
Magic: Attack:3 Defense:1
Serpentine Shield Serpentine Shield
Off-Hand: Attack:4 Defense:6
Hydra Rhea Hydra: Rhea
Soldier: Attack:24 Defense:18
Hydra Epimetheus Hydra: Epimetheus
Soldier: Attack:18 Defense:24
Hydra Tethys Hydra: Tethys
Soldier: Attack:21 Defense:21
Arcanist Arcanist
Soldier: Attack:23 Defense:20

Jewel of Fire Jewel of Fire
Amulet: Attack:7 Defense:6
Hellkite Minion Hellkite Minion
Soldier: Attack:32 Defense:27
Hellslayer Knight Hellslayer Knight
Soldier: Attack:29 Defense:33
Hydra Atlas Hydra: Atlas
Soldier: Attack:23 Defense:28
Hydra Prometheus Hydra: Prometheus
Soldier: Attack:35 Defense:25

Loot Damage Threshold 

  • 1 epic - 600,000 (100%)
  • 2 epic - 3,100,000 (100%)
  • 3 epic - 5,000,000 (5+ million gives a chance, but there are no "safe" amounts)

See Also


  • If you would like some help to defeat your Hydra, please ask for help on the wiki's Call to Arms page.
  • Previously, this monster also required one Red Dragon Egg to summon.

Some Stats for Cronus Hunters, 311 slayings achieved the following:
244 - Hydra: Rhea (24/18)
206 - Hydra: Epimetheus (18/24)
187 - Hydra: Tethys (21/21)
200 - Hydra: Atlas (23/28)
100 - Hydra: Prometheus (35/25)
Allowing to create: 
100 - Cronus, The World Hydra (60/60)
Average Total Hit 100 causing 3.8 million worth of damage giving 2000 Monster Rank Points.

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