ARK: Survival Ascended·Boss·Guardian

Hydraskos

AstraeosASA v94.7Dragon set

Hydraskos unlocks the Dragon set. Gamma brings the Tek Behemoth Gate and both creature saddles. Alpha drops the Tek Transmitter and Tek Cloning Chamber.

19 tekgrams · 0 from this set only · Dragon set

read in game 2026-09-01 Dataset verified against ASA v94.7 · 2026-10-02

View tekgrams Read the guide

Pick one tier or several on the left. The rail, tribute, ability numbers, and composition follow your picks side by side; tekgrams show the highest tier you picked and everything below it.

Tekgrams

Every tekgram this fight unlocks

read in game 2026-09-01

19 in total. Each tier includes the ones below it. This set only marks the 0 no other unlock set gives.

	Tekgram	First at
	Megalodon Tek SaddleEquip a Megalodon with this to ride it, enabling the rider to fire plasma projectiles. Using requires learning this Tekgram.	Gamma
	Small Tek TeleporterAllows instantaneous traversal between Teleporters! Requires Tek Generator to power and Tek Engram to use.	Gamma
	Tapejara Tek SaddleEquip a Tapejara with this to ride it, enabling the rider to fire plasma projectiles. Using requires learning this Tekgram.	Gamma
	Tek Behemoth Cellar DoorThis composite Tek slab can be used to secure hatches.	Gamma
	Tek Behemoth GateA large composite Tek gate that can be used with a Behemoth Gateway to allow even the largest creatures in or out.	Gamma
	Tek Behemoth GatewayA large composite Tek gateway, reinforced with Obsidian polymer, that can be used with a Behemoth Gate to allow even the largest creatures in or out.	Gamma
	Tek LeggingsHighly advanced leggings that allow for powerful forward movement. Equipping requires learning this Tekgram.	Gamma
	Tek ReplicatorPlace materials along with blueprints in this to create Tek items, and many other items. Requires Element to run, and Tek Engram to use.	Gamma
	Medium Tek TeleporterAllows instantaneous traversal between Teleporters! Requires Tek Generator to power and Tek Engram to use.	Beta
	Tek Dedicated StorageHolds a large amount of a single resource.	Beta
	Tek Doors & WindowsA stable composite Tek door that provides entrance to structures. Can be locked for security.	Beta
	Tek Fence Foundation & SupportThis composite Tek foundation is used to build walls around an area.	Beta
	Tek ForcefieldGenerates an impenetrable, expandable spherical shield to keep out enemies. Requires Element to run, and Tek Engram to use.	Beta
	Tek Roof, Ramp & StairsComposite Tek roof, ramp & stairs for travelling up or down levels.	Beta
	Vacuum Compartment & Moonpool	Beta
	Large Tek TeleporterAllows instantaneous traversal between Teleporters! Requires Tek Generator to power and Tek Engram to use.	Alpha
	Tek ChestpieceHighly advanced chestpiece with an integrated jetpack. Equipping requires learning this Tekgram.	Alpha
	Tek Cloning Chamber	Alpha
	Tek TransmitterTransmits items, Survivors, and creatures to other ARKs! Requires Tek Engram to use.	Alpha

Gamma: 8 tekgramsBeta: 15 tekgrams (gamma 8 + 7)Alpha: all 19 (gamma 8 · beta +7 · alpha +4)All 19, first-at column shows the tier

Same 19 from Dragon.

Abilities

What this boss does

One row per attack. Effect is the number for the selected tier; response is one clause.

Ability	Type	Effect	Response
Bite	melee	Gamma 600 baseBeta 900 baseAlpha 2400 base	Tank from the tail, the front bite is the hit that dumps a tame.
Claw	melee	Gamma 600 baseBeta 900 baseAlpha 1800 base	Keep the line off his feet, the claw is the close melee.
Fire Breath	ranged	Gamma 240 baseBeta 360 baseAlpha 600 base	Kill the fire head second, after darkness, so the burn does not eat the tank.
Ice Breath	ranged	Gamma 240 baseBeta 160 baseAlpha 600 base	Stay behind the necks so the slow cannot pin the pack in the other cones.
Poison Breath	debuff	Gamma 240 baseBeta 360 baseAlpha 600 base	Pull stunned tames out, poison is the one that knocks them out.
Darkness Breath	debuff	Gamma 240 baseBeta 360 baseAlpha 600 base	Break this head first, a blinded line stands there and stops attacking.
Lightning Breath	ranged	Gamma 240 baseBeta 360 baseAlpha 600 base	Stay behind the necks so the center cone does not tag the tank.

Guide

How you kill it

our call

Written from fights on this cluster, with the numbers worked out below.

Theorycrafting

The math behind these numbers, from our own fights.

DPS floorHP ÷ timer = the damage per second that kills the boss with zero seconds spare.
Your lineN × creature × melee = what a line of N delivers at the melee you bred, from the creature's base damage and attack rate.
Their hit on youhit × 100 ÷ (100 + armor) = damage through a saddle at that armor.

Admin commands

For server owners and single player

A date tag means we ran or read that line on our test server. A catalog tag means the line was built from our catalog data and was not run. GiveItem takes quantity, quality, then the blueprint flag.

Summon (gamma) game files 2026-09-18

cheat Summon Hydra_Character_BP_Boss_Easy_C

Summon (beta) game files 2026-09-18

cheat Summon Hydra_Character_BP_Boss_Medium_C

Summon (alpha) game files 2026-09-18

cheat Summon Hydra_Character_BP_Boss_Hard_C

Give a Megalodon Tek Saddle engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/Saddles/PrimalItemArmor_MegalodonSaddle_Tek.PrimalItemArmor_MegalodonSaddle_Tek'" 1 0 0

Give a Small Tek Teleporter engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Misc/PrimalItemStructure_TekTeleporterMini.PrimalItemStructure_TekTeleporterMini'" 1 0 0

Give a Tapejara Tek Saddle engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/Saddles/PrimalItemArmor_Tapejara_Tek.PrimalItemArmor_Tapejara_Tek'" 1 0 0

Give a Tek Behemoth Cellar Door engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/Structures/Tileset/HatchframesXL/Doors/Items/PrimalItemStructure_Ceiling_Door_XL_Tek.PrimalItemStructure_Ceiling_Door_XL_Tek'" 1 0 0

Give a Tek Behemoth Gate engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Tek/PrimalItemStructure_TekGate_Large.PrimalItemStructure_TekGate_Large'" 1 0 0

Give a Tek Behemoth Gateway engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Tek/PrimalItemStructure_TekGateframe_Large.PrimalItemStructure_TekGateframe_Large'" 1 0 0

Give a Tek Leggings engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/TEK/PrimalItemArmor_TekPants.PrimalItemArmor_TekPants'" 1 0 0

Give a Tek Replicator engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Misc/PrimalItemStructure_TekReplicator.PrimalItemStructure_TekReplicator'" 1 0 0

Give a Medium Tek Teleporter engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Misc/PrimalItemStructure_TekTeleporterSmall.PrimalItemStructure_TekTeleporterSmall'" 1 0 0

Give a Tek Dedicated Storage engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/StructuresPlus/Misc/DedicatedStorage/PrimalItemStructure_DedicatedStorage.PrimalItemStructure_DedicatedStorage'" 1 0 0

Give a Tek Doors & Windows engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Tek/PrimalItemStructure_TekDoor.PrimalItemStructure_TekDoor'" 1 0 0

Give a Tek Fence Foundation & Support engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Tek/PrimalItemStructure_TekFenceFoundation.PrimalItemStructure_TekFenceFoundation'" 1 0 0

Give a Tek Forcefield engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Misc/PrimalItemStructure_TekShield.PrimalItemStructure_TekShield'" 1 0 0

Give a Tek Roof, Ramp & Stairs engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/StructuresPlus/Structures/Ramps/Tek/PrimalItemStructure_Ramp_Tek.PrimalItemStructure_Ramp_Tek'" 1 0 0

Give a Vacuum Compartment & Moonpool engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/BuildingBases/PrimalItemStructure_UnderwaterBase.PrimalItemStructure_UnderwaterBase'" 1 0 0

Give a Large Tek Teleporter engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Misc/PrimalItemStructure_TekTeleporter.PrimalItemStructure_TekTeleporter'" 1 0 0

Give a Tek Chestpiece engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/TEK/PrimalItemArmor_TekShirt.PrimalItemArmor_TekShirt'" 1 0 0

Give a Tek Cloning Chamber engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/BuildingBases/PrimalItemStructure_TekCloningChamber.PrimalItemStructure_TekCloningChamber'" 1 0 0

Give a Tek Transmitter engram catalog

cheat GiveItem "Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Misc/PrimalItemStructure_TekTransmitter.PrimalItemStructure_TekTransmitter'" 1 0 0

Same set, other bosses. And where to run it here.

Abyssalus the Void BeneathAstraeos
Also on Astraeos.
DragonThe Island
Same unlock set, different boss and tribute.
Natrix the DeviousAstraeos
Also on Astraeos.
Shallocis the Void AboveAstraeos
Also on Astraeos.
Thodes the Widow MakerAstraeos
Also on Astraeos.
Survivor Planner/tools/planner
Plan a build around this clear; the planner knows which tier you have.

On this cluster

Runs on 1 of our servers.

Astraeos

Ask for a run in Discord