Xi Construct

Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Xi Construct
Defense System
Health	2800 (+840 per level)
Damage	13 (+2.6 per level)
Speed	60 m/s
Armor	15

The Xi Construct is a Boss Monster added in the Survivors of the Void expansion, and is part of the Survivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Alpha Construct
HP: 100 (+30 per level)
Damage: 12 (+2.4 per level)
Class: Ranged
Speed: 0 m/s
Armor: 0 Survivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Xi Construct
Defense SystemHP: 2800 (+840 per level)
Damage: 13 (+2.6 per level)
Class: Ranged
Speed: 60 m/s
Armor: 15 Construct monster family. Being a Boss, the Xi Construct may be encountered after initiating a stage's Teleporter Event. It can otherwise spawn naturally during higher difficulties.

Environments

• Sky MeadowSky Meadow (Stage 5)
  Sprite Fields
  You dream of serenity.
  
  
• Survivors of the Void - DLC Content
  Sulfur Pools is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info. Sulfur PoolsSurvivors of the Void - DLC Content
  This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info.Sulfur Pools (Stage 3)
  Pungent Spring
  You dream of brimstone.
  
  Tiered lakes of shallow sulfur pools. Arcing bridges and underground caves connect the map together.
• After Looping:
  • Titanic PlainsTitanic Plains (Stage 1)
    Ground Zero
    You dream of rolling hills.
    
    Gigantic stone arches bracket the skyline, while the main play-field overlooks a vast fractured tectonic lowland.
• Other Environments with the Artifact of Dissonance enabled

Skills & Behavior

Primary: Xi Cannon

The Xi Construct's front opens and after 1 second it fires a devastating beam at its target that deals 10 x 100% damage per second with a proc coefficient of 0.3 per tick. After 4 seconds the attack concludes by creating an explosion, which is indicated by a golden ring on the ground where the beam strikes. The blast deams 400% in a radius of 15m with linear falloff, with a proc coefficient of 0.0, a force magnitude of 6000 and a bonus force of 2000 in the y-direction. The attack has an end lag of 2 seconds.

The Xi Construct can only minimally change its firing angle when using this skill, but it can move back and forth horizontally to chase its target.

This skill has a cooldown of 8 seconds.

Utility: Xi Barrier

The Xi Construct creates a golden spherical shield with a radius of 15m around itself that functions similarly to Engineer'sEngineerThe Engineer is a unique class that requires planning and positioning to be successful.
Class: Ranged
HP: 130 (+39 per level)
Damage: 14 (+2.8 per level)
Armor: 0
Umbra: Fortification Expert Bubble ShieldBubble Shield (Utility)Place an impenetrable shield that blocks all incoming damage.
Survivor: Engineer, blocking projectiles (including hitscan projectiles) from the outside, but not those from the inside. The shield will stay up for 10 seconds and the Xi Construct will move but not attack for the duration; however, its Survivors of the Void - DLC Content
Alpha Construct is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Alpha ConstructsSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Alpha Construct
HP: 100 (+30 per level)
Damage: 12 (+2.4 per level)
Class: Ranged
Speed: 0 m/s
Armor: 0 will continue to attack.

This can be countered by going inside the shield and attacking the Xi Construct from inside; however, this may be difficult with less mobile Survivors.

While channeling the Xi Barrier, the Xi Construct will face downward and slowly rotate to the side, with any Alpha Constructs currently mounted on its faces rotating along with it.

The shield does not give any defensive buffs; it simply creates a spherical boundary that does not allow projectiles to cross it or any targetting attacks to acquire a target past it.

This skill has a cooldown of 15 seconds (which does not begin until the shield has disappeared).

Special: Tetra Alpha

The Xi Construct spawns with 4 allied Survivors of the Void - DLC Content
Alpha Construct is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Alpha ConstructsSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Alpha Construct
HP: 100 (+30 per level)
Damage: 12 (+2.4 per level)
Class: Ranged
Speed: 0 m/s
Armor: 0 on its corners, which support it with additional firepower. After these are destroyed, the Xi Construct periodically re-summons them.

This skill has a cooldown of 4 seconds. It can store up to 4 charges, and it can only be used if there is at least one empty spawning location.

Behaviors

1. Use special: no requirements. This means upon entering combat the Construct will instantly summon 4 Alpha Constructs.
2. Use utility: the Construct must have less than 50% health. This behavior cannot be used twice in a row, which is only relevant if the Construct has Hardlight AfterburnerHardlight Afterburner
   Add 2 extra charges of your Utility skill. Reduce Utility skill cooldown.
   Add +2 (+2 per stack) charges of your Utility skill. Reduces Utility skill cooldown by 33%..
3. Chase: the Construct must be more than 200m away from its target. This behavior will be active for 3 seconds upon selection.
4. Use primary: the Construct must be within 150m from its target and have line of sight. This behavior cannot be used twice in a row.
5. Follow: the Construct must be more than 100m away from its target. This behavior will be active for 0.5 seconds and cannot be selected twice in a row.
6. Strafe: the Construct must be within 30-100m from its target. This behavior will be active for 0.5 seconds and cannot be selected twice in a row.
7. Flee: the Construct must be within 30m from its target. This behavior will be active for 0.5 seconds and cannot be selected twice in a row.
8. Stop: no distance requirements. This behavior will be active for 2 seconds and cannot be selected twice in a row. This means that if all skills are on cooldown (or currently in use) and the target in within 200m, the Construct will alternate between a behavior from 5-7 for 0.5 seconds and standing still for 2 seconds.

Loot

Main Article: Defense Nucleus

If the Xi Construct is the Teleporter Boss, there is a 15% chance for the Uncommon item (that drops as a reward for defeating the Xi Construct) to be replaced by its Boss item, the Survivors of the Void - DLC Content
Defense Nucleus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Defense NucleusSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Defense Nucleus
Summon an Alpha Construct on killing an elite.
Killing elite monsters spawns an Alpha Construct with bonus 300% damage and 300% health. Limited to 4 (+4 per stack)..

Notes

• Xi Constructs will constantly try to put distance between themselves and the player, but generally will not make any attempts to get closer to a target. Attempting to chase them down will often just cause them to retreat further, which may prolong the Teleporter Event by a significant amount, especially if the player lacks long-range damage.
  • This may make it difficult to fight them as melee Survivors such as AcridAcridAcrid is a melee-range hybrid who uses powerful poisons to melt tanky enemies.
    Class: Melee / Ranged
    HP: 160 (+48 per level)
    Damage: 15 (+3 per level)
    Armor: 20
    Umbra: Test Subject or MercenaryMercenaryThe Mercenary is a high skill melee survivor that uses his many dodges to weave in and out of combat.
    Class: Melee
    HP: 110 (+33 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Hired Blade.
• Since the Xi Construct continually summons 4 weak allies that are attached to it, on-kill items like the GasolineGasoline
  Killing an enemy ignites other nearby enemies.
  Killing an enemy ignites all enemies within 12m (+4m per stack) for 150% base damage. Additionally, enemies burn for 150% (+75% per stack) base damage. and Will-o'-the-wispWill-o'-the-wisp
  Detonate enemies on kill.
  On killing an enemy, spawn a lava pillar in a 12m (+2.4m per stack) radius for 350% (+280% per stack) base damage. are extremely effective against it.
• A Survivors of the Void - DLC Content
  Voidtouched is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info. VoidtouchedSurvivors of the Void - DLC Content
  This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info.Voidtouched (Affix Buff)
  Gain the power of a Voidtouched Elite.Collapse on hit and block one hit every 15 seconds. Xi Construct will not spawn Voidtouched Alpha Constructs. However, the Alpha Constructs will still fight alongside the Voidtouched Xi Construct.
  • In the reverse scenario, in which an Alpha Construct stationed on the Xi Construct becomes Voidtouched, the Xi Construct will attempt to attack it.
  • If a Xi Construct becomes Voidtouched while there are Alpha Constructs stationed on it, the Alpha Constructs on it will fight the Xi Construct.

Lore

======================================== ====   MyBabel Machine Translator   ====
====     [Version 12.45.1.009 ]   ======
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Training… <100000000 cycles>
Training… <100000000 cycles>
Training... <100000000 cycles>
Training... <103441 cycles>
Complete!
Display result? Y/N
Y
========================================

DETECTING LOW ENERGY SIGNAL FROM UNIT 05432-B, IN DELTA QUADRANT.

RECEIVING REQUEST FOR PRELIMINARY ASSAULT ON UNKNOWN HOSTILE.

OPENING LINE. UNIT 05432-B

REJECTING

REPROACHING

REPROACHING

COMPARING UNIT 05432-B TO 05432-A, C, AND D

SHAMING INITIATED

REFER HISTORY SLATES – NO HOSTILES SINCE [??]

HELLO?

LINE CLOSED

Version History

Survivors of the Void

• (Undocumented) Added New Boss: Xi Construct

Trivia

• Until the second Survivors of the Void patch, it was possible to encounter the Xi Construct even without enabling the DLC when the Artifact of Dissonance was enabled.
• In the lore entry, the Xi Construct is communicating with the Alpha Construct in its own entry.