1/4/2022 – Added Legendary Hydra.

The strength of the hydra, the number of troops needed to defeat, and other information about the hydra (Junior Hydra, Medium Hydra, Senior Hydra, Legendary Hydra) that will appear during the “Hydra Invasion” Event.

Basics of Monster Battles

• Fight with only the highest tier of mounted troops.
• Increase mounted troop attack (buff values can be roughly checked in the PvP battle report). Next, increase the number of troops. If you want to get zero wounds, there is no need to raise any other factors. (Reference: How to increase buffs, etc.)
• If casualties are inevitable, the number of wounded can be halved by activating the Monarch Talent Lv6 “Mortality”. Raising mounted troop HP & mounted troop defense is also effective, but does not dramatically reduce the number of wounded.
• Add debuffs.
  • Not a normal debuff, but an against-monster debuff.
  • Basically, you equip Yukimura Sanada (-5% defense) with a set of 4 dragon equipment (-10% attack & defense).
  • If you are fighting solo, set it on the sub-city mayor as possible (they will stack).
  • If you are rallying, only one of the participants needs to participate with it (it does not stack with the number of people, it only applies to one person).

For more details, please refer to this article.

Strength of Hydra

Even the weakest Junior Hydra is as strong as Kamaitachi. Senior Hydra is slightly stronger than Behemoth.

• Lv1 Junior Hydra 84.9M power
  • Bosses with similar strength
    • Kamaitachi, Witch 3, Warlord 3, Viking Normal 50, Viking Hard 36, Viking Icebreaker
• Lv2 Medium Hydra 120.6M Power
  • Bosses with similar strength
    • Fafnir, Viking Hard 46, Viking Berserker
• Lv3 Senior Hydra 198.9M Power
  • Bosses with Similar Strengths
    • Behemoth, Viking Hard 50
• Lv4 Legendary Hydra 328.4M Power
  • Bosses with Similar Strengths
    • Not applicable (stronger than Phoenix, weaker than Jormungandr)

Number of Troops to Kill – Overview

The troop types, troop levels, and number of troops needed to defeat Hydra are roughly as follows. However, note that this depends on how well each player’s buffs (generals, research, gear, etc.) are developed.

t = Tier (Troop Level)

• Junior Hydra
  • t12 Cavalry 500,000+ / Zero wounds at 1,000,000
• Medium Hydra
  • t13 Cavalry 900,000+ / Zero wounds at 1,600,000
• Senior Hydra
  • t13 Cavalry 1,500,000+
• Legendary Hydra
  • t14 Cavalry 2,600,000+

Number of Troops to Kill – Details

Details on number of troops, wounded, generals, etc. are as follows.

Lv1 Junior Hydra 84.9M

t11 Cavalry 620,000 -> wounded 21,564

• Buffs – Attack:452% / Defence:320% / HP:310%
• Monarch Talent “Lv6 Mortality” – Available
• Main Generals – Ii Naomasa Lv26
  • Specialty: All green
  • Full dragon Set
  • Power 2.3M
  • Dragon Celtic demon
• Assistant – Hannibal
  • Power 600k
  • No gear

t12 Cavalry 464,500 -> wounded 10,900

• General – Martinus Lv30 3.1M

t12 Cavalry 501,417 -> wounded 19,854

• Keep Level – k32
• General – Roland Lv28 2.6M
• Equipment – Dragon Equipment (except ring)
• Dragon – Fafnir Lv5
• Research – Academy Lv30 (with most mounted tech maxed)

t12 Cavalry 600,000 -> wounded 8,100

• General – Martinus Lv30 3.1M

t12 Cavalry 999,999 -> wounded 3,676

• Cavalry Attack Buff +644%
• Main Generals – Roland Lv32
• Assistant – Aethelflaed
• Dragon gear

t12 Cavalry 1,027,500 -> wounded 0

• Cavalry Attack Buff +832%
• Debuff – Against monsters Attack -10%, defense -10%
• Keep Level – k32
• General – Martinus Lv30 3.6M
• Item – Normal March Size Increase / No Attack Items

t13 Cavalry 610,000 -> wounded 4,300

• General – Martinus Lv31 3.2M

t13 Cavalry 950,000 -> wounded 0

• Cavalry Attack Buff – about +790%

Lv2 Medium Hydra 120.6M

t13 Cavalry 1,024,454 => Wounded 9,302

• Cavalry Buff – Attack 932% / Defense 614% / HP602%
• Monarch Talent “Lv6 Mortality” – Available
• General – Hannibal Lv36 5.8M
  • 5 Star / Cultivate +500
  • Attributes – L1483 / A1471 / D1432 / P1380
  • Skills – Mounted Troop Attack Against Monster Lv4 / Mounted Troop Attack Lv4 / Luck Lv4
  • Specialty – None
  • Dragon – Fafnir Lv8
• Monarch Gear – Cavalry 3 type Lv8
• Buff Item – None
• Rally (= None of Subordinate City)

t13 Cavalry 1,600,000 -> wounded 0

• Cavalry Attack Buff – about +1,000%
• Debuff – Dragon equipment set available (in rally)
• General – Martinus
• Skill – Against Monsters Mounted Troop Attack Lv4 available
• Research – Cavalry Attack maxed out
• Item – +20% Attack Buff
• Monarch Talent – Lv6 Mortality

Lv3 Senior Hydra 198.9M

t13 Cavalry 1,546,000 -> wounded 16,602

• Cavalry Attack Buff – about +800%
• General – Martinus Lv35 5M
• Monarch Gear – 3 Cavalry Types Lv8

t14 Cavalry 1,664,000 -> wounded 0

• Cavalry Attack Buff – 1,300%
• General – Martinus
• Skill – Mounted Troop Attack Against Monster Lv4 etc
• Buff Item – Attack +20%, Defense +20%, HP +20% used

t14 Cavalry 2,229,703 -> wounded 14,182

• General – Aethelflaed Lv35 4.9M

Lv4 Legendary Hydra 328.4M

t14 Cavalry 2,685,402 -> wounded 21,275

• Cavalry Attack Buff – about 1,150%
• General – Martinus Lv38 5.8M
  • Attributes – 1,441 to 1,563
  • Equipment – Ares Spear / Courageous Ares Armor / Fearless Ares Boots / Fearless Ares Helmet / Fearless Ares Leg Armor / Fearless Ares Ring / All 5 Stars
  • Skill – Mounted Troop HP Lv4 / Mounted Troop Defence Lv4 / Mounted Troop Speed Lv4
  • Specialty – All 4 Maxed out
  • Dragon – Fafnir Lv10
• Subordinate City – None

Reference – Hydra Basic Stats

Junior hydra

• Level – 1
• Power – 84.9M
• Stamina Cost – 20
• Monarch EXP – 3,500
• General EXP – 3,500 (Initial value without EXP increase buff)
• Prestige – 50
• Alliance Points – 50
• Alliance Honor – 50

• Drop Item (Detail)
  • Junior Hydra Chest
  • Refining Stone
  • 5K Spiritual Beast EXP
  • Artwork Fragment Chest V

• Alliance Boss Package (Detail)
  • Senior Alliance Boss Package

Medium hydra

• Level – 2
• Power – 120.6M
• Stamina Cost – 30
• Monarch EXP – 3,500
• General EXP – 4,000 (Initial value without EXP increase buff)
• Prestige – 50
• Alliance Points – 50
• Alliance Honor – 50

• Drop Item (Detail)
  • Medium Hydra Chest
  • Refining Stone
  • 5K Spiritual Beast EXP
  • Artwork Fragment Chest V

• Alliance Boss Package (Detail)
  • Senior Alliance Boss Package

Senior hydra

• Level – 3
• Power – 198.9M
• Stamina Cost – 30
• Monarch EXP – 3,500
• General EXP – 4,500 (Initial value without EXP increase buff)
• Prestige – 50
• Alliance Points – 50
• Alliance Honor – 50

• Drop Item (Detail)
  • Senior Hydra Chest
  • Refining Stone
  • 5K Spiritual Beast EXP
  • Artwork Fragment Chest V

• Alliance Boss Package (Detail)
  • Senior Alliance Boss Package

Legendary hydra

• Level – 4
• Power – 328.4M
• Stamina Cost – 45
• Monarch EXP – 3,500
• General EXP – 5,000 (Initial value without EXP increase buff)
• Prestige – 50
• Alliance Points – 50
• Alliance Honor – 50

• Drop Item (Detail)
  • Legendary Hydra Chest
  • Refining Stone
  • 5K Spiritual Beast EXP
  • Artwork Fragment Chest V
  • Treasure Box

• Alliance Boss Package (Detail)
  • Senior Alliance Boss Package

Reference – Mechanics of Monster Battle

Battle Mechanics (Monster, Boss)

In monster warfare, what is going on internally and how? Once we know that, we know what to watch out for. I have conducted many tests and analyzed the mechanics of combat.

Reference – Generals Recommendations

Best of Boss General / Monster Hunter

Other Bosses

Calculator: Number of Troops to Kill Boss

The tool calculates the number of troops required for zero wounding by simply entering the boss, troop type and level, and buffs/debuffs.

How Many Troops need to Defeat Boss?

A comprehensive guide that summarizes the required troop level and number of troops for each boss.

• Boss / Monster Power List

Normal Boss

B10: How to kill Griffin

B11: How to kill Ifrit

B12: How to kill Kamaitachi

B13: How to kill Fafnir

B14: How to kill Behemoth

B15: How to kill Phoenix

Event Boss

How to kill Royal Thief

How to kill Golem (Lv1-5)

How to kill Lava Turtle (Lv1-5)

How to kill Witch (Lv1-5)

How to kill Warlord (Lv1-5)

How to kill Bayard (Lv1-3)

How to kill Cerberus (Lv1-4)

How to kill Sphinx (Lv1-6)

How to kill Ymir (Lv1-5)

How to kill Pan (Lv1-5)

How to kill Hydra (Lv1-4)

World Boss