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// boss · risk of rain 2

Xi Construct, how to beat it.

A floating golden cube with a cannon and a bubble that blocks shots.

// at a glance

At a glance.

Xi Construct
In-game titleDefense System
TypeTeleporter boss
ExpansionSurvivors of the Void
Health2800 (+840 per level)
Base damage13 (+2.6 per level)
Armour15
Where it spawnsStage 1: Titanic Plains · Stage 3: Golden Dieback, Sulfur Pools, Treeborn Colony · Stage 4: Lurid Basilica, Repurposed Crater · Stage 5: Sky Meadow.
// attacks

Xi Construct attacks and how to dodge them.

Xi Cannon

It opens, aims for 1 s and fires a beam that burns for 4 s and ends in an explosion marked by a golden ring.

How to dodge it: It can barely turn while firing: move sideways and leave the golden ring.

Xi Barrier

Creates a 15 m bubble for 10 s: shots from outside cannot get in. Meanwhile it does not attack.

How to dodge it: Get inside the bubble and hit it from there.

Tetra Alpha

It carries 4 Alpha Constructs on its corners that shoot; break them and it brings them back.

// loot

What it drops.

When it is the teleporter boss, each green item it drops has a 15% chance to be its boss item instead: Defense Nucleus.

Defense Nucleus

Killing an elite spawns a strong robot ally that fights for you. Up to 4; each extra one, 4 more.

Stacking: Effective cap of 4 or 5 copies: there is a 20-ally limit.

Watch out: Engineer turrets do inherit it.

// tips

Tips to beat it.

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// faq

FAQ.

What does Xi Construct drop in Risk of Rain 2?

When it is the teleporter boss, each green item it drops has a 15% chance to be its boss item instead: Defense Nucleus.

Where does Xi Construct spawn?

Stage 1: Titanic Plains · Stage 3: Golden Dieback, Sulfur Pools, Treeborn Colony · Stage 4: Lurid Basilica, Repurposed Crater · Stage 5: Sky Meadow.

How much health does Xi Construct have?

2800 base health, plus 840 per enemy level. Armour: 15.

// more bosses

Other bosses.

Beetle QueenStone TitanWandering VagrantClay DunestriderGrovetenderImp OverlordMagma WormOverloading WormSolus Control UnitGrandparentScavengerVoid DevastatorSolus AmalgamatorAlloy HunterLynx TotemShruumAlloy Worship UnitAurelioniteArtifact ReliquaryMithrixTwisted ScavengerVoidlingFalse SonSolus WingSolus HeartAnima HarvesterEcho of Providence

All bosses

Sources: the Risk of Rain 2 wiki (each boss page and Module:Enemies/Data, read on 31 October 2026) and the game's own text. The explanations are our own. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).