Cryogen

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Cryogen
Cryogen.png
Statistics
Type Boss
Environment Snow Biome
AI Type Cryogen AI
Damage 60 / 96 / 100 / 144 (melee)
25 / 100 / 105 / 150 (ice shield)
46 / 80 / 84 / 120 (frost blast)
52 / 92 / 96 / 138 (ice shard)
88 / 92 / 132 (ice bomb)
Max Life 22,500 / 36,000 / 40,000 / 88,000
Defense (DR) 10 (35% DR)
KB Resist 100%
Inflicts debuff
Frostburn.png Frostburn
20% / 33% chance
Debuff duration 1.67 seconds
Debuff tooltip It's either really hot or really cold. Either way it REALLY hurts.
Item (Quantity) Rate
Soul of Might.png Soul of Might
20-40 / 25-40
100%
Frigid Bar.png Frigid Bar
• 15-24
100%
Bittercold Staff.png Bittercold Staff
25% / 33%
Effluvium Bow.png Effluvium Bow
25% / 33%
Glacial Crusher.png Glacial Crusher
25% / 33%
Icebreaker.png Icebreaker
25% / 33%
Ice Star.png Ice Star
• 100-150
25% / 33%
Permafrost.png Permafrost
25% / 33%
Snowstorm Staff.png Snowstorm Staff
25% / 33%
Frozen Key.png Frozen Key
20%
Cryogen Mask.png Cryogen Mask
14.29%
Cryogen Trophy.png Cryogen Trophy
10%
Cryo Stone.png Cryo Stone
10%
Cryogen (Lore).png Cryogen (Lore)
• Always on first kill
100%
Treasure Bag (Cryogen).png Treasure Bag (Cryogen)
• in Expert Mode only
100%

Cryogen map.png
Map Icon
Cryogen Trophy.png "The ancient ice spirits have been unbound!" Cryogen Trophy.png

Cryogen is a Hardmode boss fought in the Snow biome.

Spawn[edit | edit source]

Cryogen does not spawn on its own and requires the player to summon it with a Cryo Key while in the Snow biome at any time of day.

Behavior[edit | edit source]

Cryogen has six phases, each of which has its own attack pattern and AI. Cryogen also spawns with a shield with 2000 health; this shield must be destroyed to directly attack Cryogen and will regenerate shortly after being destroyed.

Attacks[edit | edit source]

Phase 1[edit | edit source]

  • Teleports and fires a random star-shaped barrage of frost bolts.
  • Summons Cryocores upon taking damage.

Phase 2[edit | edit source]

  • It will begin to rain/snow.
  • Cryogen attempts to fly above the player and rain icicles down on them.
  • Fires a barrage of frost bolts.
  • Summons Aurora Spirits upon taking damage.

Phase 3[edit | edit source]

  • Cryogen tries to ram into the player.
  • Fires barrages of frost bolts and ice shards.
  • Continuously summons Cryocores, regardless of damage taken.

Phase 4[edit | edit source]

  • Cryogen gets faster and still tries to ram the player.
  • Fires barrages of frost bolts.
  • Cryocores are buffed from this phase onward.
  • Continuously summons Aurora Spirits, regardless of damage taken.

Phase 5[edit | edit source]

  • Cryogen now teleports near the player from time to time while continuing his other attacks.

Phase 6[edit | edit source]

  • Cryogen begins randomly spinning while trying to ram the player erratically.
  • Fires frost bolts and ice shards at high velocity.
  • The rain/snow will stop when Cryogen is defeated.

In Expert Mode[edit | edit source]

  • Cryogen gains massive attack and defense boosts as health depletes.

In Revengeance Mode[edit | edit source]

  • Gains the ability to inflict the Chilled and Frozen debuffs and fires projectiles faster.

In Death Mode[edit | edit source]

  • Summons more minions in all phases.

Summons[edit | edit source]

Image Name Condition
Aurora Spirit.png Aurora Spirit Phase 2 & above
Ice Star.png Cryocore All phases

Aftermath[edit | edit source]

When Cryogen is defeated for the first time, Cryonic Ore spawns in the Underground Snow biome.

Tips[edit | edit source]

  • Drink a Warmth Potion before the start of the battle, as this will reduce the cold damage caused by the debuffs that its projectiles can cause.
  • An Ankh Shield can grant complete immunity to Chilled.
  • Do not stray too far or fly too high during the fight, as Cryogen will become immune to all damage if the player is not within the Snow biome.
  • A wide arena with several levels of platforms can help with dodging his attacks. Putting in one or two minor platforms of solid blocks can help protect you and allow you to change direction when dealing with his second phase.
  • If you're moving slowly on a platform you can keep Cryogen above you which can be useful for dealing quick damage with ranged weapons; make sure to have a way of dodging him when he comes too close.
  • Avoid being hit by Cryogen and his icicles at all costs, as the Glacial State inflicted by them could lead to the player becoming stunlocked and easy prey to Cryogen's attacks.

Trivia[edit | edit source]

Lore[edit | edit source]

Yharim's prison for the magic of the ice castle, Cryogen, is a representation of Yharim's bitter cold hatred for the Archmage of Ice. When Yharim was young, he ventured from the jungle temple to the ancient ice temple where the archmage Permafrost resided. Yharim asked to learn from him in order to "peacefully" calm the denizens of the underworld. But the archmage saw through his ruse and viewed only bitter contempt within Yharim's heart and the fiery urge to annihilate the underworld obsidian towers and their inhabitants. When the archmage refused Yharim kindly took his leave, bowing to the archmage and returning to his home. However, the archmage had not realized that Yharim had a contingency plan in place; Yharim had expertly placed magical runes hidden in a pocket dimension right outside the ice temple. Within minutes after Yharim took his leave, he activated the runes, causing the entire ice temple to be enveloped in pure darkness. Cryogen is what remains, a mindless frozen structure that was once trapped by Yharim due to its uncontrollable nature and powerful magic. Little does the Terrarian know that defeating the Wall of Flesh will rouse far more than mere spirits upon its' defeat...

Characters: Enemies (List): Cosmic Elemental.png Pre-Hardmode • Shockstorm Shuttle.png Hardmode • Impious Immolator.png Post-Moon Lord • Calamitas.png Bosses
 
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