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Achille HD — Xterium defense
Planet defense Achille · Heavy

Achille HD

In brief: The Achilles system is so huge that a factory is being built specifically for it. Giant monolithic slabs are mounted, as a rule, in rock on the shores of vast oceans. If the planet is uninhabited, resort to artificial storage. The cooling s…

(data current as of 2026-05-22, game version 2.12.7)

WeaponGravity + Plasma
ShieldHeavy
Durability5 000
Weapon points5

Stats

AttackAttack90094%
ShieldShield60067%
ArmorArmor5 00089%
DurabilityDurability5 00022%

The bar shows how much higher a stat is than the rest of the defence (the percent is its rank among all). The number on the left is the absolute value.

WeaponWeaponGravity + Plasma
Shield typeShield typeHeavy
Armor typeArmor typeHeavy
Shield regenerationShield regeneration40%
Weapon pointsWeapon points5
Build cost (1 pc.)
Metal11 500 Crystal1 000 Deuterium2 500

Bars are shown relative to the strongest structure of its class (Achille). Defense is static — it has no speed or cargo hold. "Weapon points" — one structure's contribution to combat power.

Effectiveness against fleets

"Rock-paper-scissors": a structure has its own effectiveness multiplier for each ship type. ×2…×5 — how much harder it hits a favorable target; ×0.5 — an unfavorable one. On top of that, combat applies rapidfire ×1.5 (a separate multiplier, it is not multiplied).

Effective against

"Rapidfire" is a combat mechanic of the engine. More details — section Combat system.

Calculator: defense versus ship

Pick a structure and a ship — we'll show the defense's effectiveness multiplier against that ship.

Requirements

To build this structure, you need to raise the following to the required level:

Defense is built on the planet (the same place as the fleet). Technologies are leveled up in the Laboratory — section Research.

Description

The Achilles system is so huge that a factory is being built specifically for it. Giant monolithic slabs are mounted, as a rule, in rock on the shores of vast oceans. If the planet is uninhabited, resort to artificial storage. The cooling system is built separately: deep under water. The powerful gravity cannon is backed up by two side laser turrets. According to the characteristics, "Achilles" is an order of magnitude superior to all analogues. With the advent of this model, many experts began to talk about a new era in the design of super-powerful air defense systems.

Questions and answers

What is "Achille HD" in Xterium?
The Achilles system is so huge that a factory is being built specifically for it. Giant monolithic slabs are mounted, as a rule, in rock on the shores of vast oceans. If the planet is uninhabited, resort to artificial storage.
Which ships is "Achille HD" effective against?
"Achille HD" is most effective against: Death Star. The effectiveness multiplier by class comes.
Where to build "Achille HD"?
"Achille HD" is built on the planet after the required research. After a battle, defense partially rebuilds itself and does not turn into debris.

The Xterium knowledge base is maintained by the project team; data is verified against the game engine. About the project and team →

Verified data · Game version: 2.12.7