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

Monster Details
Name Type Divine Breakpoint Time to kill 5% Health (Conquest)
Cronus, the World Hydra Epic World 0  ? 168 hours 6,250,000
Target Areas
Target Health Physical Fire Earth Wind Water Note
Cronus, the World Hydra 125.000.000 0 0 0 0 0
Monster Loot
1 Epic 2 Epics 3 Epics Gold Medal
1%+ 20.000 500.000 5.020.000
99%+ 555.000 3.040.000 >26.000.000 3.300.000
Source: Castle Age Monsters Damage/Loot Spreadsheet

Use this text string to post damage needed in monster chat:

  • 1 Epic 0.6M, 2 Epic 3.1M, 3 Epic >26.0M

Participants: up to 130 people total, with the following distribution:

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

Additional 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


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 thresholds for 99%:

  • Epic: 1 - 555.000 (starts at 20.000), 2 - 3.040.000 (starts at 500.000), 3 - >26.000.000 (starts at 5.020.000)


Item Archives


  • Gold Medal: 3.300,000 pure damage in less than 24 hours (before 144 hrs monster timer): +3 Skill Point (one-time award)
  • Slay Cronus, The Hydra 5 Times (500,000 min dmg): +1 Skill Point, +1 Favor Point
  • Slay Cronus, The Hydra 25 Times (500,000 min dmg): +25 Favor Point


  • Introduced: October 30, 2009
  • Previously, this monster also required one Red Dragon Egg to summon.
  • Please help the Castle Age community by entering your loot data in THIS spreadsheet.

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