Most ARC Raiders builds ask you to win the fight you picked. This one asks you to pick a different fight. The sniper loadout trades close-range lethality for the ability to end an engagement before your opponent sees you, which is the defining skill in any extraction shooter where survival out-earns kills. It runs cleanest on solo raids and long looting sessions across Spaceport and Dam Battlegrounds, where 60-meter sight lines exist in quantity. It is the wrong answer for PvP brawls, interior squad pushes, and anywhere you cannot set the range yourself.
Energy Ammo through a item:jupiter punishes heavy ARC armor and boss cores. Heavy Ammo through a item:ferro handles everything else at 40 damage per shot. The Looting Mk. 3 Cautious augment gives you 24 backpack slots, 70 weight, five quick-use slots, Light-shield-only compatibility, and integrated entity:binoculars per arcraiders.wiki, which is what lets this loadout fit under the weight cap without cutting quick-use items. Light shield keeps you mobile enough to reposition when a fight comes to you.
The Solo Stealth and Boss Hunter archetypes share enough DNA that one loadout covers both, if you skill-plan correctly. This guide commits to one allocation order that serves solo looting during normal raids and pivots to boss support during Harvester conditions, with one weapon swap between the two.
Core Loadout
Augment: item:looting-mk3-cautious Shield: Light Primary: item:jupiter Secondary: item:ferro Quick use (5 slots): 1 entity:smoke-grenade, 2 Heals, 1 entity:shield-recharger, 1 entity:hornet Driver
The Cautious augment drives the shape. 24 backpack slots is the largest inventory any Mk. 3 offers outside the Flanking variant, and the 70 weight cap is enough to run two long guns without creeping into the red. Integrated entity:binoculars matter more than they sound: on a sniper build you are glassing targets 60+ meters out before every push, and free binos save the quick-use slot a real pair would eat. The weak entity:adrenaline-shot on shield break is the rescue ability you get once per raid if you play correctly; if you need it more, the build is wrong for the situation.
Light shield is not a compromise, it is the point. You are not trading bullets at 15 meters, so the absorption of Medium or Heavy is wasted weight. You need the speed to relocate after every entity:jupiter shot, because muzzle flash and report give away your position inside a one-second window. Run Light and reposition.
Two heals and one entity:shield-recharger are the quick-use non-negotiables. The last two slots are entity:smoke-grenade and entity:hornet Driver. Smoke is the disengage tool when a squad pushes your position and the correct play is to break line of sight, not out-trade a bolt-action in a 15-meter fight. entity:hornet Driver exists for entity:bastion ARCs, which outrange most weapons and soak sustained fire; one driver ends a entity:bastion at 40 meters without burning half your Energy Ammo reserve.
Why Each Slot
Cautious Looting Mk. 3
Three things beat Survivor or Safekeeper. 24 backpack slots hold more loot, which is the whole reason to play solo at range. Integrated entity:binoculars turn a quick-use slot from binos to smoke. The Light-shield-only restriction is a feature, because sniping wants mobility over absorption.
Survivor is the obvious counter. Its 80 weight cap is the game's highest and its stationary-health regen is strong in long loots. But Survivor caps at Medium shield and has no Binoculars, and this build does not need the extra 10 weight if you pick ammunition carefully. Cautious wins on the metrics that matter here per skycoach.gg's augment breakdown.
entity:light-shield
A Light shield pairs with the 70-weight cap to leave room for two long guns and a full quick-use bar without clipping. Movement speed on Light is untouched by the shield weight penalty, so every entity:jupiter shot can be followed by a 3-meter reposition before the return fire arrives. That single rotation is the difference between living through a sniper duel and dying to it.
entity:jupiter (Primary)
The Jupiter is the meta sniper for anti-ARC and boss work. 60 damage per shot through Energy Ammo, 71.7 meters effective range, and bolt-action accuracy make it the only weapon that reliably one-taps Wasps at range and punches through entity:bastion knee joints in two to three shots per the arcraiders.wiki weapons page. The 7.7 fire rate is the catch: every shot is committed, and panic-firing the Jupiter is a guaranteed death. If you cannot hit a stationary head at 50 meters on the training dummy, run something else until you can.
Energy Ammo is the quiet reason this weapon earns its slot. Medium and Heavy are cheaper and more plentiful, but Energy specifically shreds ARC armor in ways other ammo types do not, as thegamer.com logged in their PvE tier list.
entity:ferro (Secondary)
The entity:ferro is the cheapest S-tier weapon in the game. Two rubber and five metal at the Gunsmith per gamerant.com's budget loadout guide, 40 damage per shot through Heavy Ammo, 53.1 meters effective range, break-action. It answers two problems: a fight closing to 30 meters where the Jupiter's bolt-action reset is too slow, and an empty Energy Ammo reserve on a long raid. Both weapons are single-shot precision guns, so a Raider who runs one can run the other without relearning fundamentals, and the pair covers 20 to 70 meters with damage that hurts ARCs as hard as it hurts Raiders.
Quick Use
Two heals is the floor. You take chip damage from Wasp swarms and stray rounds no matter how careful the positioning. entity:shield-recharger keeps a Light shield viable across multiple engagements. Hornet Driver is the Bastion answer. entity:smoke-grenade is disengage, repositioning, and revive cover if you run with one other Raider.
Skill Tree Allocation
Character level caps at 75, and the total skill point pool across the 40 skills is 76 per the arcraiders.wiki skills page. That constraint forces choices. Here is the order I commit to for a sniper build.
Level 1 to 20: Mobility Foundation
Dump early points into Mobility. Foundational for every build, doubly so for sniping where repositioning between shots is survival.
- entity:marathon-runner (5 pts) at level 5, reduced stamina cost for movement
- entity:youthful-lungs (5 pts) at level 10, max stamina increase
- entity:looters-instincts (5 pts) at level 15, faster loot reveal during scavenging windows
By level 20 you have spent 15 points, enough Mobility to reach intermediate-tier skills without capstones.
Level 20 to 40: Survival Pays Off
The sniper build is a looting build that happens to shoot people, so Survival investment tracks the core goal.
- entity:silent-scavenger (5 pts) at level 25. A sniper who gives away his position while looting a crate is a dead sniper
- entity:calming-stroll (5 pts) at level 30, stamina regen at walk pace. Pairs with entity:marathon-runner for near-infinite positioning
- entity:broad-shoulders (5 pts) at level 35, extra carry capacity on top of the 70-weight cap
At level 40 you have 35 points across Mobility and Survival, with no Conditioning investment yet. That is intentional. Conditioning is a firefight tree, and this build does not win firefights.
Level 40 to 75: Capstones and Specialization
- entity:effortless-roll (5 pts) at level 45, reduced roll cost for panic disengages
- entity:slip-and-slide (5 pts) at level 50, sprint-slide for cover transitions
- entity:used-to-the-weight (5 pts) at level 55. The one Conditioning dip; the weight reduction generalizes to weapon swap speed per overgear.com's build primers
- entity:looters-luck (5 pts) at level 60, double-item reveal chance
- entity:carry-the-momentum (1 pt, requires 15 Mobility) at level 65, free sprint after dodge roll
- entity:security-breach (1 pt, requires 36 Survival) at level 75, opens security lockers
Total: 72 points across Mobility (26), Survival (26), Conditioning (5), plus two capstones. Four flex points remain for entity:fight-or-flight or entity:in-round-crafting, whichever fits your playstyle.
Boss Hunting: entity:queen and entity:matriarch
The sniper build is not a solo boss killer. Soloing the entity:queen is suicide per overgear.com's boss guide, and the entity:matriarch's homing missiles do not care how far back you stand. What this build does is contribute to a squad boss hunt during Harvester, in a specific role.
You are the red-core damage dealer. The Jupiter's 60-damage Energy rounds are the best sustained DPS for the core phase after plate-stripping. A squad running Boss Hunter brings a item:hullcracker user for plates and a Jupiter user for cores; this build is the Jupiter user without modification.
If another Raider already runs Jupiter, swap your primary to entity:hullcracker and keep the entity:ferro. Your Cautious backpack holds the extra Heavy ammo a entity:hullcracker eats through, and you become the plate-stripper. The entity:matriarch fight rewards entity:hullcracker-first rotation because homing missiles punish the long-range static positioning a Jupiter asks for.
If the team runs Tactical Mk. 3 Healing on the medic, you stay Cautious and they handle revives.
When To Disengage
This build falls apart inside 25 meters against an equally skilled Raider.
The Ferro's 6.6 fire rate and the Jupiter's 7.7 fire rate both punish sloppy close-range shooting. An item:anvil or item:stitcher out-trades either of your weapons inside a stairwell or across a doorway. If a fight closes and the enemy has a proper SMG or hand cannon, smoke and leave is the correct play, not trade and die.
Three signals mean disengage. One, you lose the high ground or the long angle. Two, a second enemy flanks while you are committed to a Jupiter scope. Three, your Light shield breaks and the Cautious entity:adrenaline-shot fires, because that is your one free out and burning it on a fight you should not have taken is how solos die. Smoke, reposition, re-scout. The extraction timer does not care how many kills you got, only whether you made it to the evac point.
Variant: entity:osprey Instead of Jupiter
The Jupiter's one real weakness is the ammo pool. Energy Ammo is scarce relative to Medium and Heavy, and a 40-minute raid can leave you with an empty Jupiter and a full Ferro. The swap is the entity:osprey.
The entity:osprey is the Medium-ammo bolt-action sniper. 80.3 meters effective range (up from 71.7), 17.7 fire rate (up from 7.7), 45 damage per shot (down from 60) per the arcraiders.wiki weapons table. You trade per-shot damage for fire rate, range, and the most common ammo type in the game.
Pick Osprey on longer raids, when your stash is Medium-heavy, or on maps with 70+ meter sight lines. Keep Jupiter for Harvester where boss damage matters, anti-ARC routes where Energy shines, and shorter raids. The rest of the loadout is unchanged: Cautious, Light shield, Ferro secondary, same quick-use bar. The only variable is which long-range ammo type you trust.