Hydroid
Hydroid builds
First Tide — Star Chart
Star Chart2–3 FormaModerateHigh confidenceStar ChartSteel Path

Hydroid — First Tide

Star Chart build. Plunder the room, dash through with Tidal Surge, rain Tempest Barrage. Tentacles wait until you mean to camp. Primed Continuity and Primed Flow are the first real upgrade — not Blind Rage.

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

Junctions through the Outer Terminus. Steel Path is the next card, not this one.

Wrong drop or mechanic?

Why this build?

Star Chart for Junctions through the Outer Terminus. Steel Path is the next card, not this one.

Health: Inventory unknown — Mark what you own. Until then this is a recommendation, not a test you failed.

Play this in Star ChartPlay this in Steel Path
  • The 2023 rework made Plunder the kit. Old Undertow Hydroid is gone. Do not look up 2018 videos.
  • Passive plus Barrage plus Plunder is a cheap armor-strip engine even with Intensify.
  • Tidal Surge is your Rolling Guard. Dash, cleanse, live.

Don’t use this for: Steel Path endurance · level-cap content

Accessible mods and a working energy / survivability loop

Bring: Primary (Corrosive-friendly) — Any gun. Plunder paints extra Corrosive onto it. A primer (Epitaph, Kuva Nukor) makes the first Plunder fatter.

Instead: First TideInstead: Corrosive Corsair — Steel PathInstead: Corrosive Corsair — OptimisedInstead: Corrosive Corsair — Endgame

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 0/3 · required — 3 on the card. Codex does not track installed Forma.
  • Helminth · optional — Not required
  • Arcanes · recommended — 0/1 recommended
  • Shards · optional — None listed

Investment: 3 Forma · Reactor · 2 specialised mods. Typical farm ~1–2 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

High confidence. How strongly the Codex recommends this for its stated purpose — not a test log. Verification is separate: Codex Checked against Update 43.5.

Your next step

Next: Corrosive Corsair — Steel Path

Unlock Helminth, Steel Path, or Archon Hunts before this upgrade is honest.

Corrosive Corsair — Steel Path

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. NextGet Corrosive ProjectionOpen Nightwave
  2. After that2–3 FormaOne slot at a time. Rank 30 after each polarize.
  3. FinalFirst Tide — Star ChartStar Chart · Moderate · 2–3 Forma

Upgrade from here

Corrosive Corsair — Steel Path

Locked behind Helminth, Steel Path, or Archon Hunts. Tick those on Progress first.

Open Corrosive Corsair — Steel Path

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

    Two farm routes, then a test run

    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

You just beat Vay Hek and have never pressed Plunder.

Time to a playable copy
Same day. Intensify, Stretch, Continuity.
First mission to practice in
A Grineer Exterminate on Earth or Mars. You want armored packs.

3 button drills · 10 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

Tide loop

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

  1. 1Tempest Barrage (1) a doorway so Corrosive starts stacking — your passive makes that status eat more armor.
  2. 2Plunder (3) the pack. You steal armor and your guns/abilities grow Corrosive.
  3. 3Tidal Surge (2) through leftovers. You are invulnerable in the wave. Recast Plunder when it drops.
  4. 4Tentacle Swarm (4) only if you are camping a tile. Starter Hydroid is a strip-and-shoot pirate, not a kraken main.

First mission — press these buttons

  1. 1

    Rain a doorway

    1

    Press 1 on a pack. Water cannons. Corrosive starts ticking because of the passive.

    You will know it worked when: A storm circle. Armor bars twitch.

  2. 2

    Plunder

    3

    Walk in, press 3. You gain armor. Your next shots should feel greener.

    You will know it worked when: Buff icons. Enemies look stripped.

  3. 3

    Dash out

    2

    Tidal Surge through the leftovers. You are a wave. You cannot be shot in it.

Common mistakes

  • Pressing 4 in a hallway

    Tentacles want a room you will stay in. Starter Hydroid shoots.

When this feels easy

  1. 1Viral TempestFirst real purchase. Barrage becomes a primer.
  2. 2Then Blind RageThat is Corrosive Corsair.

Parts checklist

0 of 10 owned. Tap How on anything you still need.

Dependencies

11 dependencies

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

  1. 1●hydroidframe
  2. 2○Corrosive Projectionmod
  3. 3○Power Driftmod
  4. 4○Intensifymod
  5. 5○Primed Continuitymod
  6. 6○Stretchmod
  7. 7○Streamlinemod
  8. 8○Primed Flowmod
  9. 9○Vitalitymod
  10. 10○Steel Fibermod
  11. 11○Arcane Energizearcane

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

  • Arcane Energize

    missing · Buy 20–40 Platinum worth

    Optional. Skip until you can afford it. Skip until you have it — Star Chart does not need Eidolon arcanes.

Strength

~145% (Intensify)

Duration

130–155% (Continuity)

Range

145% (Stretch)

Strength fattens Plunder armor and Corrosive bonus. Range is how many enemies you steal from.

From the mods

Live power

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

Strength
145%
Duration
155%
Range
145%
Efficiency
130%
Energy
+275%
Capacity
48 / 67

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

Hydroid mods

  • AuraCorrosive ProjectionNightwave
  • ExilusPower DriftOrokin Vaults / Lua
  • 1IntensifyMercury / Venus rewards
  • 2Primed ContinuityBaro Ki'Teer / relics
  • 3StretchEnemy drops
  • 4StreamlineEnemy drops
  • 5Primed FlowBaro Ki'Teer / relics
  • 6VitalityEarth / drops
  • 7Steel FiberPlunder adds armor on top. A little base armor makes the bonus feel real.Enemy drops

Primary (Corrosive-friendly)

Any gun. Plunder paints extra Corrosive onto it. A primer (Epitaph, Kuva Nukor) makes the first Plunder fatter.

Arcanes

Arcane Energize

Optional. Skip until you can afford it. Skip until you have it — Star Chart does not need Eidolon arcanes.

Eidolon hunts / trade

Archon shards

    FarmAll builds
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