Xaku
Xaku builds
Vast Strip
Endgame4–5 FormaEndgameMedium confidenceSteel PathShards optional

Xaku — Vast Strip

Endgame build. Vast Untime's blast armor-strips and slows, then you walk around as a faster skeleton while 2 and 3 are frozen in time. Strength to the strip breakpoint.

Codex Checked · Compared against current game data for this update. · Update 43.5 · 5 Sept 2026 · PC · Current

Grineer Steel Path, armor tiles, people who want Xaku as a strip bot

Wrong drop or mechanic?

Don’t build this yet

First Bones first

This loadout sits at Endgame. It wants Forma, Helminth, or shards you may not have. Play the Starter until those systems are open — then this page is the upgrade, not the homework.

Open First Bones

Why this build?

Endgame for Grineer Steel Path, armor tiles, people who want Xaku as a strip bot

Health: Not yet — Helminth, Steel Path, or Archon Hunts still closed. Play the Starter.

Play this in Steel Path
  • Untime is strip plus slow plus a duration pause. That is three abilities in one button.
  • If you only press 2 and never 4, you are playing half a Xaku.
  • Gaze is the precision strip. Untime is the room strip. You can run both.

Don’t use this for: Star Chart only · new accounts · ability-nuke as the damage

Specialised investment for hard content

You don’t need the shards to run the loop. They are a later ceiling, not a gate.

Bring: Strip, then guns — Same Grasp halo. Untime is the strip. Gaze is backup strip on a single tank. A Corrosive Projection aura still helps the math.

Alternative if…

Instead: First BonesInstead: First Bones — Star ChartInstead: Lohk Battery — Steel PathInstead: Lohk Battery — Optimised

My test

Did this still work for you?

Your note, in this browser. Separate from Codex verification — the stamp on the card is editorial, this is yours.

Readiness

Inventory unknown

Not checked — add your collection. You have not failed a test.

  • Required mods 0/9 · required — 0/9 named
  • Forma 0/5 · required — 5 on the card. Codex does not track installed Forma.
  • Helminth · optional — Not required
  • Arcanes · recommended — 0/2 recommended
  • Shards · optional — Optional unless the card says a breakpoint

Investment: 5 Forma · Reactor · 2 shards · 4 specialised mods. Typical farm ~4–6 hours. Trade if a route is vaulted.

Codex Checked · Compared against current game data for this update. · Update 43.5 · 5 Sept 2026 · PC · Current

Medium confidence. A solid recommendation with more situational dependencies. Confidence is not verification. Verification is separate: Codex Checked against Update 43.5.

Plan

Today → next → later

Inventory unknown — mark “I own this” on a few mods. Until then this is a plan, not a score of zero.

  1. TodayPlay First BonesThe Starter is the loadout you can actually take into a mission tonight.
  2. NextGet Corrosive ProjectionOpen Nightwave
  3. After that4–5 FormaOne slot at a time. Rank 30 after each polarize.
  4. LaterCrimson · StrengthHelminth and shards are the last rungs. They are not the Starter.
  5. FinalVast StripEndgame · Endgame · 4–5 Forma

Helminth & shards

What to put on the body

  • 3 Tauforged Crimson · Strength — Untime strip breakpoint.Archon locked
  • 1 Amber · Casting Speed — Recast 4.Archon locked

Tonight

What is actually up

30 minutes, one hour, or two — matched to this loadout, not a dump of the Origin System.

  1. 30 minutes

    Farm Corrosive Projection

    One named gap. Open Nightwave

  2. 60 minutes

    Corrosive Projection, then Forma

    Finish the missing named card, then spend a Forma if a polarity is still fighting you.

  3. 120 minutes

    One Archon Hunt

    If you are logging off after this, stop at the named component. Do not start a second Forma session tired.

Who this is for

Play this build from zero

Grineer armor is the problem. You want the blast to be the strip.

Time to a playable copy
After enough Strength to strip plus Range so the blast is a room.
First mission to practice in
Grineer SP. Armor bars should vanish in the 4 wave.

2 button drills · 13 parts · tick the lists as you go

Before you start

0 of 3 done

Put it on the Warframe

0 of 4 done

Keep this up

Untime loop

Pocket card. Stick this on a second screen; the long version is the mission below.

  1. 1Grasp (2) first so guns exist.
  2. 2Untime (4). Armor falls off in the blast. Slow hits. Your Grasp timer freezes.
  3. 3Walk. You are faster in skeleton form. Guns shoot the naked pack.
  4. 4Recast 4 before it ends or Grasp starts ticking down again.

First mission — press these buttons

  1. 1

    Guns, then blast

    4

    2 then 4. Slow plus strip. Skeleton form is faster — walk, do not camp one tile if 4 is about to end.

    You will know it worked when: Armor disappearing. A slow. Your other buffs frozen.

  2. 2

    Recast before it drops

    If 4 ends, Grasp starts ticking. That is the fail state.

Common mistakes

  • Untime with no guns stolen

    You stripped a room you cannot shoot. 2 first.

When this feels easy

  1. 1Crimson shards to the strip capDo not guess. Simulacrum a Bombard.

Parts checklist

0 of 13 owned. Tap How on anything you still need.

Dependencies

16 dependencies

Frame → mods → unlocks. Tick Collection and Progress. This is a decision graph, not a wiki tree.

  1. 1●xakuframe
  2. 2○Corrosive Projectionmod
  3. 3○Cunning Driftmod
  4. 4○Blind Ragemod
  5. 5○Umbral Intensifymod
  6. 6○Overextendedmod
  7. 7○Stretchmod
  8. 8○Primed Continuitymod
  9. 9○Primed Flowmod
  10. 10○Rolling Guardmod
  11. 11○Molt Augmentedarcane
  12. 12○Molt Efficiencyarcane
  13. 13○Crimson · Strengthshard
  14. 14○Amber · Casting Speedshard
  15. 15○Steel Pathunlock
  16. 16○Archon Hunts (shards optional)unlock

Depends on

What this loadout needs

Required is a gate. Recommended is a ceiling. Optional is a later farm — don’t stall the card for it.

Required

Recommended

  • Molt Augmented

    missing · Unlock the Zariman

    Kills push Strength to the strip cap if Blind Rage was shy.

  • Molt Efficiency

    missing · Zariman

    Duration on Untime itself.

Optional

Watch it played

YouTube for this loadout

All videos
The kitTheKengineer · Jun 2024

Xaku is amazing! (and broken)

Grasp of Lohk, Vast Untime, The Lost. Armor strip plus stolen guns.

Play in WatchYouTube

Strength

~200%+ for full Untime strip (check your tooltip — shard if you are short)

Duration

155%+

Range

200%+

Range is Untime radius and gun count. Recast 4 when it ends so the pause never drops.

From the mods

Live power

Additive from max-rank Codex mods. Efficiency clamped 15–175%. Umbral set is +11% Strength per extra piece.

Strength
183%
Duration
155%
Range
250%
Efficiency
45%
Energy
+275%
Capacity
52 / 67

1 Umbral piece

Open slots

Weapon HUD

Arsenal numbers

Base × damage mods × crit expectation × fire rate × multishot. No faction, no quantization. Galvanized kill stacks are a slider, not assumed.

Damage
35
Crit
12% × 2.00
Status
26%
Fire rate
9.58
Multishot
1.00
Avg hit
39
Arsenal DPS
376

Toggle common mods

Xaku mods

  • AuraCorrosive ProjectionNightwave
  • ExilusCunning DriftLua
  • 1Blind RageOrokin Vaults
  • 2Umbral IntensifyThe Sacrifice
  • 3OverextendedOrokin Vaults
  • 4StretchDrops
  • 5Primed ContinuityBaro
  • 6Primed FlowBaro
  • 7Rolling GuardArbitrations

Strip, then guns

Same Grasp halo. Untime is the strip. Gaze is backup strip on a single tank. A Corrosive Projection aura still helps the math.

Arcanes

Molt Augmented

Kills push Strength to the strip cap if Blind Rage was shy.

Zariman

Molt Efficiency

Duration on Untime itself.

Zariman

Archon shards

  • 1Crimson · StrengthUntime strip breakpoint.3 Tauforged · Netracells
  • 2Amber · Casting SpeedRecast 4.1 · EDA
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