Skill / Yellow

Eclipse Protocol

Set Bonuses

Activated when wearing the corresponding number of pieces:

PiecesBonus
3-piece +15% HAZARD_PROT

4-piece Talents

Talents unlocked at 4 pieces, equipped on chest or backpack:

At a Glance

Eclipse Protocol is the status effect specialist. It turns burn, bleed, blind, and poison into both your damage source and your sustain. The 4-piece talent repairs your armor whenever you apply a status, and statuses spread on kill, which means in dense PvE encounters you become functionally immortal while burning the entire room down.

It is a yellow set, so it leans into Skill Tier and skill damage less than other yellow sets like Empress International or Future Initiative. Eclipse cares about status, not skill power directly, which makes it a hybrid weapon-status build more than a pure skill build. That hybrid identity is its strength and the reason it survived the TU22 status effect rebalance largely unchanged.

Set Bonuses Detail

The 2-piece bonus grants +15% Status Effect damage. Status damage is a separate damage type from weapon and skill, with its own gear and brand bonuses. The 15% from this set is additive to other status damage rolls, and the bucket caps at around 100% before diminishing returns kick in.

The 3-piece bonus grants +25% Status Effect duration. This is enormous for sustain because the 4-piece repair scales with status uptime. A burn that normally lasts 8 seconds runs 10 seconds with the bonus, which is 2 extra seconds of armor regeneration per application. Across a fight with 5-10 status applications the math adds up to permanent armor.

The 4-piece talent, Makeshift Repairs, has two halves:

The repair is per-application. Applying burn to 4 enemies in one Firestarter chemlauncher shot triggers 4 repair instances. They do not stack on the same buff bar, but the timer refreshes on each new application, so a continuous burn loop keeps you at full armor indefinitely.

The spread is per-kill. Kill a burning enemy and every enemy within roughly 6 meters catches fire. Combined with Contagion chest talent the radius increases significantly, and the chain reaction in mob waves is the set's signature feature.

4pc Mechanic Deep Dive

The set has three pillars: source, application, and propagation.

Source: You need a reliable status source. Skills are the obvious choice (Firestarter chemlauncher for burn, Stinger hive for bleed, Blinder firefly for blind, Foam chemlauncher for ensnare). Weapon talents that apply status work too: Pyromaniac inflicts burn, Sadist inflicts bleed, certain exotic weapons have built-in status procs.

Application: Each individual enemy hit by a status counts as one application. AoE skills apply to multiple enemies simultaneously, which means a single Firestarter blast on a 5-enemy group triggers 5 separate Makeshift Repairs procs.

Propagation: Killing a status-affected enemy spreads the status. The spread is at the same intensity and remaining duration as the source, which means if you kill a burning enemy with 5 seconds of burn left, every enemy in the spread radius gets 5 seconds of burn. Then those enemies trigger Makeshift Repairs on you because new statuses just got applied.

The chain reaction is the build. You ignite one enemy, it spreads, you kill the next, it spreads again, and your armor is constantly repairing. In a Heroic Control Point with 15-20 enemies, the build is essentially self-sustaining once the first burn lands.

Status damage cap is the limiter. The Backpack talent (often called Tag Team or Empower in Eclipse-themed gear) raises the cap, allowing your status to crit harder against high-armor targets. Without it the set falls off in Legendary content where named bosses have inflated HP pools.

Best Weapons

Iron Lung (Exotic SMG)

The status master. Iron Lung's talent stacks damage based on stamina and pairs with status sustain because Eclipse keeps your armor topped up, keeping stamina high. Not a status source itself but the damage scaling complements the build's defensive identity.

Pyromaniac (Named LMG)

Built-in burn application on every shot. Effectively turns your primary weapon into a status source, freeing your skills for damage instead of just status delivery. The named version rolls with talent guaranteed to apply burn.

Sweet Dreams (Exotic Shotgun)

Inflicts blind on melee hits. Niche but works for close-range Eclipse builds where you mix shotgun blasts with melee finishers. Each blind triggers Makeshift Repairs.

Lullaby (Named Shotgun)

Standard pellet shotgun with a bleed-on-hit talent variant. Closer-range alternative to Pyromaniac for builds that want more burst.

Top Builds

Build 1: Eclipse × Iron Lung (Status Master)

Skills: Firestarter chemlauncher (burn source) plus Pulse or Stinger hive depending on whether you want utility or bleed redundancy. Specialization: Firewall for the +15% burn damage and shield for emergency cover, or Technician for skill power if you go pure skill damage.

Weapons: Iron Lung primary, Pyromaniac secondary, sidearm flexible. The dual status sources mean you can switch weapons mid-fight without losing application.

Play loop: open with Firestarter on the largest mob group, switch to Iron Lung for damage, let burn spread on kills. Armor stays topped because you trigger 5+ Makeshift Repairs in the opening seconds.

Build 2: Eclipse × Pyromaniac (Burn Cascade)

Same template, swap Iron Lung for Pyromaniac as primary. Drop the Firestarter for a Mortar turret or Striker drone since your weapon already applies status. Run a Decoy seeker mine for crowd control or a Banshee pulse to combine confuse status with burn.

This version trades raw damage for higher status uptime. Pyromaniac applies burn on every body shot, which means even unreliable hits contribute to the chain reaction. Better for chaotic encounters where positioning is tough.

Pros and Cons

Pros:

Cons:

FAQ

Q: Do all status effects trigger Makeshift Repairs? A: Yes. Burn, bleed, blind, ensnare, shock, poison, and confuse all count. The trigger is the moment of application, so refreshing an existing status on the same enemy counts as a new application and procs another repair.

Q: Does the spread work on bosses? A: Spread requires killing the affected enemy. Bosses do not die from spread, so the propagation does not chain into them. The status itself can be applied to bosses normally.

Q: Best specialization for Eclipse? A: Firewall for burn-focused builds (the +15% burn damage and the flame chainsaw signature). Technician for raw skill power if you want statuses to hit harder. Survivalist for the crossbow status. Firewall is the canonical pick.

Q: Does Eclipse need high Skill Tier? A: It scales with Skill Tier but is not strictly dependent on it. SHD 6 is comfortable. Any higher and you start losing offensive rolls for marginal status damage gains. The set's value is in the 4-piece, not raw skill power.

Q: How does Contagion compare to Vigilance for chest? A: Contagion is mandatory for the build's identity. Vigilance gives flat WD but disables on damage taken, which is constantly happening in PvE. Contagion's spread radius increase is what makes the chain reaction work at scale.

Q: Can Eclipse work in PvP? A: Limited. Statuses are normalized in PvP and the spread does not happen because PvP enemies are players, not NPCs. Skip it for PvP entirely.

Q: Is Eclipse meta in TU22.1? A: Niche meta. It is best-in-slot for status builds and very competitive in Heroic Summit. For pure DPS or pure skill it is outclassed by Negotiator's and Empress International respectively. Pick it because you like the playstyle, not because it tops charts.

Q: Hardwired vs Eclipse for skill builds? A: Hardwired is for skill-cooldown spam builds where you fire skills back to back. Eclipse is for status uptime builds. They overlap a little but solve different problems. Hardwired is better for Pulse and Hive spam, Eclipse is better for chemlauncher and Firefly burn.

Last reviewed: 2026-04-25 · TU22.1 · Verified vs in-game

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