Ice Breaker doesn't take Special bricks — it manufactures its own ammo off every kill the rest of your kit makes. So you stop budgeting a Special economy and instead build one that never stops feeding the sniper: a Solar Gunslinger whose ignitions, scorch and Golden-Gun orbs are all just more rounds in the back of the rifle. The catalyst turns each shot into an explosion, and a precision shot into a full ignition. You are a one-Guardian firing line that reloads itself.
The weapon
No Backpack (intrinsic, verbatim): "Final blows or assists with any other weapon or ability have a chance to create ammo for Ice Breaker. Defeating powerful combatants will create multiple rounds."
Catalyst — "Ice Breaker" (verbatim): "Defeating a target with this weapon causes them to explode. Precision final blows or shattering a frozen target instead triggers an ignition."
What it does: Ice Breaker holds no Special-ammo reserves in the normal sense — it regenerates its own rounds passively from anything else you do (weapon kills, ability kills, even assists), and powerful combatants drop multiple rounds at once. The catalyst makes every body-kill a small AoE explosion and every precision kill (or a kill on a frozen target) a full Solar ignition — so the sniper becomes its own add-clear tool, not just a single-target tool. The design intent is a rifle you never run dry on and that paints the room with ignitions while you delete priority targets. (See Verify notes on the overheat detail.)
Loadout
Slot
Pick
Why
Subclass
Gunslinger (Solar)
Ignition synergy + the Golden-Gun orb economy that re-feeds No Backpack.
Super
Golden Gun: Marksman
Precision overpenetrating shots that create Orbs on precision hits → orbs are ability/kill events that brick Ice Breaker rounds; champion/boss damage.
Class ability
Marksman's Dodge
Auto-reloads the stowed sniper and repositions between long-range shots.
Melee
Knife Trade / Throwing Knife
A ranged Solar kill → scorch + another No-Backpack feed; precision knife kills make you radiant via Torches.
Grenade
Tripmine Grenade
Ability kills feed Ice Breaker; reliable scorch/ignition starter on a pack. (Healing Grenade if you want sustain over a feed.)
Aspect 1
On Your Mark
Precision hits (which is all this build does) grant +Weapons stat ×10 and reload — direct sniper DPS + faster between-shot reloads.
Aspect 2
Knock 'Em Down
Enhances Marksman Golden Gun (increased duration) — more precision GG shots = more orbs = more sniper ammo.
Fragments
Ember of Ashesmore scorch per hit → faster ignitions, stacks with Incendiary Rifle Rounds
Ember of Charignitions spread scorch — the catalyst's ignitions chain across the pack
Ember of Wonderrapid ignition kills → Orb of Power → another sniper-ammo feed
Ember of Torches (melee → radiant for you and allies — radiant is flat sniper damage). Ember of Empyrean if you swap to Healing Grenade and want Resto/Radiant uptime
Exotic armour — Celestial Nighthawk (Helmet):Hawkeye Hack — "Precision final blows reduce the cooldown of your Super. Modifies Golden Gun to fire a single, high-damage shot. Targets defeated by that shot give you Super energy and explode." Ice Breaker is a precision-only weapon, so every sniper precision kill chips your Super cooldown — the helmet and the rifle share one trigger. When the Super is up, Nighthawk is a second long-range nuke for the boss/champion Ice Breaker can't one-shot, and the kill refunds Super energy to start the loop again.
Other two weapon slots:
Kinetic primary — any solid Kinetic (e.g. a 120 Hand Cannon or a Scout) to do the moment-to-moment killing that bricks Ice Breaker rounds. Ice Breaker occupies the Energy/Special slot, so the Kinetic primary is your No-Backpack feeder.
Heavy: a Solar or any Power weapon (Machine Gun / Rocket / Sword) for the things a Special sniper can't delete — Solar keeps your surge mods one-element.
Why this works (the mechanics)
The weapon inverts ammo economy — you build for the feeder, not the sniper. No Backpack bricks rounds off every other kill or assist, so the whole loadout (primary, melee, grenade, Super) exists to keep the sniper loaded. There's no Special-finder/scavenger mod tax; that budget goes to damage instead. Powerful combatants drop multiple rounds, so the sniper is at its fullest exactly when the fight is hardest.
The catalyst makes a single-target gun an add-clear gun. Body kills explode; precision kills ignite. On a Solar subclass with Ember of Char, those ignitions spread scorch, which sets up the next ignition — the catalyst chains itself across a pack while you keep cracking precision headshots.
Celestial Nighthawk and Ice Breaker run on one trigger. Both pay out on precision final blows: the rifle is precision-only, so every kill simultaneously bricks a round (No Backpack) and shaves Super cooldown (Hawkeye Hack). The build's core action — line up a head, fire — advances three systems at once (ammo, Super, ignition).
Golden Gun: Marksman closes the orb loop. Its precision shots create Orbs of Power; picking up orbs and getting GG kills are themselves No-Backpack feed events, and Ember of Wonder turns ignition multikills into more orbs. Super → orbs → sniper ammo → precision kills → Super cooldown → Super. Self-sustaining.
Champion coverage comes from the artifact, not the archetype. Ice Breaker is an Aggressive-frame sniper; under Anti-Champion 2.0 that archetype maps to Unstoppable, but the cleaner answer is the artifact mod Anti-Barrier Sniper Rifle (shield-pierce + Barrier stun, and snipers are always overcharged while it's active). Either way the stun is bolted onto the rifle you're already firing — see Where it shines.
On Your Mark is free sniper DPS off the thing you already do. Precision hits stack +Weapons stat ×10; a sniper build lands nothing but precision hits, so the stack is permanently maxed — flat PvE weapon damage plus faster reloads between shots.
Stats & mods
Weapons 200 → Health ~100 → Super. Weapons is the straight damage stat for the sniper and stacks on top of On Your Mark + radiant; Super feeds the Nighthawk loop; Health keeps you alive at sniping range. Class is a soft fourth (faster Marksman's Dodge reloads).
Archetypes: Powerhouse (Weapons/Super) or Gunner-primary pieces for the Weapons ceiling. Stat tuning: trade Class/Grenade into Weapons — abilities here are feeders, not the damage, so their stat investment is cheap to dump.
Mods, by intent (no Special-ammo mods needed — the gun makes its own):
Helmet: Hands-On (Super energy on melee kills) · Heavy Ammo Finder for the Power slot.
Arms:Sniper Rifle Loader (faster reloads stack with On Your Mark) · Kinetic/HC Loader for the feeder primary.
Chest: elemental resistances (Solar + one other) for sniping-range survivability.
Legs:Solar Weapon Surge ×2 (≈+17% to Ice Breaker) · Recuperation.
Class item: Reaper (dodge → next kill spawns an Orb → sniper feed) · Powerful Attraction (vacuums the orbs your GG and ignitions spew).
Artifact mods (the load-bearing ones):Incendiary Rifle Rounds ("Solar Sniper Rifle precision hits scorch targets" — pre-scorches before the catalyst's precision ignition, making ignitions faster and bigger with Ember of Ashes), Anti-Barrier Sniper Rifle (Barrier stun + always-overcharged), and Sniper's Meditation ("Sniper Rifle hits grant stacking Sniper Rifle damage, stability and reload") or Reload at Range (precision sniper hits → stacking reload) for the DPS ramp.
Where it shines
GMs / −30/−40 content: the No-Backpack economy means you never beg for Special bricks in a no-ammo-economy GM, and ignitions clear the chaff that normally forces you off the sniper. The signature Ice Breaker fantasy lives here.
Boss/champion DPS windows: precision sniper damage + radiant + On Your Mark + Solar surge, with Golden Gun: Marksman / Hawkeye Hack as the burst on top.
Champion coverage:Barrier via the artifact's Anti-Barrier Sniper Rifle (and snipers are overcharged while it's slotted). The Aggressive-frame archetype is Unstoppable-aligned under Anti-Champion 2.0; Overload is the gap — cover it with the Kinetic primary's frame (e.g. an Overload HC/SMG) or with Tripmine scorch-stun behaviour on elites. Scorch/ignition from the catalyst staggers unshielded majors regardless.
Add-clear: catalyst explosions + Ember-of-Char ignition spread turn a sniper into a passable room-clearer between priority shots.