Steel Path Endurance focused build relying on crowd control and shield gating. Radial crowd control is essential to prevent damage and the reduce the frequency of shield gating. Crowd control options include Breach Surge, Gloom, Shooting Gallery, Resonator, Pull, Airburst, Ensnare or Silence.

Alternative Casual tank version: https://overframe.gg/build/428715/

UPDATE FEB 2024
[Recrystalize] is a new augment that allows Crystalize to self propagate.

SURVIVABILITY (IN ENDURANCE)

Survivability in endurance relies on a combination of juggling crowd control, shield gating and i-frames.

Crowd Control
Crowd control comes from radial blind of breach surge, stun from slash procs on 1, stagger in 8m on cast of 2, stun from heat/electric procs from 3, and slow from cold procs from 3 as well as the hard immobilisation from 4 to stop enemies from actually shooting you.

Shield Gating
When you lose shields from max, you can gain about 1.4s of i-frames. Casting Breach Surge costs 78 shield which is converted to 148 shield giving about 1s i-frame. Casting Crystallize fully refills shield gate.

I-frames
Rolling Guard gives 3s of i-frames (invulnerability frames) to give you breathing time to reset shield gate. Finally, Vazarin Protective Dash gives 4s of i-frames with NO cooldown, which is the ultimate backup tool for when [Rolling Guard] is on cooldown, you are facing eximus units that cannot be crowd controlled or you are out of energy to cast abilities. Vazarin is practically mandatory for a serious endurance run.

BUILD SPECIFICS

Duration
Positive duration helps uptime of 3, 4 and shooting gallery.

Efficiency
Low efficiency is possible due to [Equilibrium] energy generation and health orb production from 1.

Range
Range is required for the range of Fractured Blast, Prismatic Gem and [Muzzle Flash].

Strength
Strength boosts the drop chance of health orbs and energy orbs from 1, significantly boosting energy generation. In addition strength increases the status chance/duration buff from 3.

Aura
Completely flexible.

• Enemy Radar - helps with tracking enemy movements so you capitalize on casts of 1 and 4 to catch the most enemies.
• Combat Discipline - helps with consistent loss of health so you can take always pick up health orbs to convert into energy through equilibrium (e.g if you dont have Synth Fiber or your pet dies). Having 2 active reduces max rank combat discipline damage to 1.
• Brief Respite - allows shield gating without needing augur mods, or allows you to shield gate with 1

Exilus
Handspring interchangeable with Power Drift or Primed Sure footed if you own it.

Flexible Options
Augur Reach - flexible slot if you feel you have enough range for 1,3,4
Natural Talent - This is extremely recommended if you do not use Amber Cast speed shards as both 3 and 4 have ridiculously long cast times. Could slot over Augur Reach or Primed Flow.

Arcanes
Eruption - hilarious map wide knockdown after every cast of 1 since you're bound to generate a few orbs. Gloom extends the duration of knockdown to ridiculous lengths.
Augmented - needed for strength boost for gloom slow. Vigor is an alternative option.
Avenger - can use with Combat Discipline to get flat crit bonus.

ARCHON SHARDS

Armber Shards - 2 to 3 Cast speeds shards is basically mandatory to make Crystallize cast speed bearable, and even then you might want natural talent or madurai power transfer to make it feel better.

Emerald Shards - 2 emerald shards with +max corrosive stacks can allow Prismatic Gem to apply corrosive stacks (via Archon Continuity), which allows it to full strip and prime enemies.

HELMINTH

Basically any good crowd control could be used:

• Shooting Gallery with Muzzle Flash augment - releases radial through wall blinds, and provides an 8x stealth multiplier to melee attacks, but does not work on Acolytes or Demolysts.
• Breach Surge - blinds enemies withing line of sight, primes them for release sparks
• Gloom - 95% slow affects all non-overguarded enemies, including Acolytes and Demolysts, but does NOT work on Overguarded
• Resonator - shuts off all aggressive enemy AI, but does not affect acolytes, demolysts or overguard
• Silence - shuts off enemy abilities including acolyte abilities (particularly malice and violence) and eximus abilities (particularly annoying Arson fireblasts and Leech zones)
• Grouping - Airburst/Pull/Ensnare/Larva

ARSENAL

You could take advantage of the status buffs from 3 and use status based weapons:

Sporothrix :
Phantasma: https://overframe.gg/build/374667/phantasma-prime/phantastic-phantasma-steel-path-face-melter-with-variant-options/
Phage: https://overframe.gg/build/252696/phage/shocking-tentacles-electic-phage-dot-insane-single-target-dps/
Convectrix: https://overframe.gg/build/413255/convectrix/convectrix-efficient-beams-viral-slash/
Flux Rifle: https://overframe.gg/build/320500/flux-rifle/flux-rifle-slash-overdrive/
Vermisplicer: https://overframe.gg/build/234078/vermisplicer/vermisplicer-primary-viral-slash-anti-grineer/

Kuva Nukor: https://overframe.gg/build/232817/kuva-nukor/kuva-nukor-crit-heat-dps-anti-grineer/
Ocucor: https://overframe.gg/build/483134/ocucor/surging-tendrils-ocucor-sentient-surge/