Cryogen

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Cryogen
Cryogen.png
Cryogen2.png
Statistics
TypeBoss
EnvironmentSnow Biome
AI TypeCryogen AI
Damage60 / 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 Life17,900 / 28,640 / 38,800 / 59,040
Defense (DR)10 (35% DR)
KB Resist100%
Inflicts debuffFrostburnFrostburn
20% / 33% chance
Debuff duration1.67 seconds
Debuff tooltipIt's either really hot or really cold. Either way it REALLY hurts.
Immune toAll debuffs except:
Ichor (debuff)Cursed InfernoAbyssal FlamesArmor CrunchDemon FlamesPlagueNightwitherShredWhispering DeathSilva StunDaybrokenHoly FlamesGod Slayer InfernoMarked for DeathOn Fire!Brimstone Flames
Drops
Coins10 Gold Coin
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 1200 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 starts derping out and 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
Cryocore.png Cryocore All phases

Aftermath[edit | edit source]

Tips[edit | edit source]

  • An Ankh Shield can grant complete immunity to Chilled.
  • 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.
  • If the player is not in the Snow biome, Cryogen will move much faster.

Trivia[edit | edit source]

  • Cryogen's theme is Antarctic Reinforcement, which was composed by the artist DM DOKURO.
  • Since the Aquatic Scourge drops Souls of Sight, the Brimstone Elemental drops Souls of Fright and Cryogen drops Souls of Might, the Drax or Pickaxe Axe can technically be crafted as soon as you have defeated a Mechanical Boss, allowing you to utilize Chlorophyte on the other two.

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...