Arc Raiders Close Scrutiny: The Complete Guide

Close Scrutiny is Arc Raiders’ first ARC Operation, a PvPvE map condition that spawns Assessors: three-legged ARC probes carrying concentrated loot. Introduced on March 31, 2026 with the Flashpoint Update (Patch 1.22.0), it’s a different category of content from weather modifiers like Cold Snap or Electromagnetic Storms. Container loot across the map drops significantly, ARC patrol density increases, and Assessors become the primary loot source. Close Scrutiny is also the only way to get the Dolabra Energy Shotgun blueprint and Assessor Matrix crafting materials.

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What Close Scrutiny actually is, and isn’t

Close Scrutiny is a map-wide condition, not a separate mode. It activates on a rotating schedule (roughly one hour at a time) and changes how the entire raid plays out. When active, you can see it from the deployment screen in Speranza before you queue.

The condition is available on four of five current maps: Blue Gate, Buried City, Spaceport, and Dam Battlegrounds. Stella Montis is excluded because its indoor bunker layout can’t support the Assessor’s open-air landing mechanic. While active, normal container loot drops significantly, locked doors are open by default (the loot inside keeps its usual locked-room value), and ARC patrols appear more frequently across the map. In exchange, ARC enemy drops increase, and the map spawns Assessors: three-legged ARC probes that descend from orbit carrying rare loot.

The loop: find an Assessor, clear its defenders, breach its containers before they launch back to orbit, and extract with loot.

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How the Assessor encounter works, step by step

A few minutes into any Close Scrutiny raid, three Assessors begin descending from the sky, crashing down like meteors at randomized positions. Each Assessor fires three red beams into the sky, visible across the map, so every squad in the raid knows where it landed. Additional Assessors continue landing over the course of the session.

The Assessor itself is a dark grey, three-pronged structure mounted on a tripod of legs. It is not an enemy and it doesn’t attack. It’s a loot vessel. Each leg leads to one of three separate breachable containers, and the encounter unfolds in distinct phases:

Deployment phase. After landing, the Assessor’s platforms gradually fan out. Players must wait for this animation to complete before the legs become climbable. Use this window to scout the area and clear threats.

Breach phase. Climbing a leg and interacting with its container initiates a breach. This triggers a loud alarm that alerts all nearby ARC enemies, spawns reinforcements including Vaporizers, and announces your position to every other squad within earshot. The Assessor extends one pylon platform at a time, cycling through its three legs clockwise, so only the currently-deployed pylon is breachable — you take each container as the rotation reaches it, not all three at once.

Extraction pressure. If containers aren’t opened quickly enough, they gradually launch back into orbit and the loot is permanently lost. This timer creates genuine urgency that prevents passive, cautious play.

The one rule everyone agrees on: clear Vaporizer patrols before breaching. Starting a breach with Vaporizers still up is close to a guaranteed wipe. The alarm pulls in more ARC, and killing enemies near an active Assessor spawns additional reinforcements.

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The Vaporizer changes everything about combat

The Vaporizer is the new ARC enemy type introduced with Close Scrutiny. These are flying drones with Matriarch-level energy shields, laser weapons, and high mobility. Up to three Vaporizers spawn at each Assessor.

They deploy three attack types: a delayed laser blast that tracks players and sets them on fire, a ground sweep that leaves fire trails across grouped squads, and a laser barrage of smaller multi-target shots.

How the Vaporizer shield works

The Vaporizer’s energy shield is reactive, not always-on. It triggers from:

• Any thrown or tracked projectile: Seeker Grenades, Wolfpack Grenades, Hornet Drivers, and even a thrown Crude Explosive all pop it immediately
• Heavy weapon hits: taking a few hard shots (roughly 2-3 hits from something like a Hullcracker) also triggers the shield

Once the shield activates, it lasts roughly 7 seconds and blocks all damage completely. No weapon penetrates it. The Vaporizer also can’t attack while shielded, so the shield phase is actually a safe window to reposition and reload. After it drops, there’s an approximately 10-second cooldown before it can reactivate.

The strategy is to bait the shield with a cheap thrown item (even a Crude Explosive works), wait for it to drop, then pour damage into the Vaporizer during that 10-second window. Wolfpack Grenades do the most damage during the cooldown, but are completely wasted if thrown while the shield is up since the mini-rockets all hit the barrier for zero damage.

Weak points and how to ground them

The Vaporizer’s weak points are eight small rotors (two per corner) and a belly core, a yellow canister exposed only after stripping the bottom armor plating. Destroying enough rotors grounds the Vaporizer, and a grounded Vaporizer can be finished with a planted Deadline mine for an instant kill. The best weapons for rotor targeting are the Hullcracker (grenade launcher with armor penetration) and the Aphelion (an energy-clip rifle with strong penetration for precision shots). The Dolabra is a close-range energy shotgun, so it’s better saved for the grounded belly-core phase than for picking off airborne rotors.

Shredders, fast melee ARC units previously confined to Stella Montis, now roam all four Close Scrutiny maps. They flank relentlessly while you’re holding position near Assessors. Listen for their distinctive mechanical skittering sound. Surveyors also appear in increased numbers and are worth clearing before approaching any Assessor: when one spots you it rolls away fast while alerting nearby ARC to your position. (The reinforcement swarm itself comes from breaching the Assessor’s pylon, not from the Surveyor.)

And then there’s the PvP layer. Since the Assessor is the only meaningful loot source, every squad converges on it. The community has identified “the 25% rule”: most PvP ambushes happen when an Assessor is nearly breached, as opportunistic squads let you burn resources clearing ARC, then rush in during your weakest moment.

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Exclusive loot makes Close Scrutiny worth the pain

Each Assessor’s three containers roll from a loot table that includes items only available during Close Scrutiny:

• Dolabra Energy Shotgun Blueprint - legendary-rarity energy shotgun with two fire modes: wide-cone hipfire and a focused beam. Low drop rate; some players report 10+ breaches without seeing it. Crafting requires Gunsmith Level 3, three Shredder Gyros, three Magnetic Accelerators, and two Vaporizer Regulators.
• Assessor Matrix - an epic crafting material exclusive to Close Scrutiny. It was required for the now-expired High-Gain Antenna Project (stages 2 and 3) and other upgrade paths.
• Vaporizer Regulators - dropped by killed Vaporizers, not from containers, and still used to craft the Dolabra (2 per craft). The expired High-Gain Antenna Project needed 19 total. Only reliably obtainable during Close Scrutiny.
• Canto SMG Blueprint - a rare medium-ammo SMG blueprint that can also drop here, though it’s farmable elsewhere.
• Standard high-tier ARC crafting materials (ARC Circuitry, Advanced Powercells, Alloy, etc.) at elevated rates.

The High-Gain Antenna was an individual three-stage Player Project that paid out 500 Raider Tokens total (100 at stage 2, 400 at stage 3) plus per-stage gear like the Torrente II, Bobcat III, a Photoelectric Cloak, and a Snap Hook. The tokens are plain currency, not earmarked for any cosmetic set. Note: this project expired ahead of the Riven Tides update, so it’s no longer active.

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Three proven strategies from stealth to full assault

Strategy 1: Full Combat Clear (squads of 2-3). The standard approach. Spot the red beam, approach with cover, scout Vaporizer patrol paths from distance. Clear both Vaporizer groups and any visible Surveyors before touching the Assessor. Assign one member to PvP overwatch, one to clearing ARC, and one to breach. Work the pylons in rotation as each deploys rather than expecting to hit all three at once. Extract via a remote point, never the closest one to the Assessor.

Strategy 2: Stealth Breach (solo or duo). The community cheese approach. Equip Photoelectric Cloak, Smoke Grenades, and Lure Grenades. Wait for ARC patrols to distance themselves from the Assessor. Deploy smoke on your target container, sprint in, breach and loot, toss a Lure Grenade in the opposite direction, cloak and vanish. Commit to one container per attempt. If hunting the Dolabra blueprint specifically, some players run completely naked speed runs with smoke, adrenaline shots, cloak, and no weapons. Breach, check for blueprint, Safe Pocket it immediately if found, then surrender and requeue.

Strategy 3: Vulture Play (solo). Let another squad trigger the breach and absorb the ARC reinforcement wave. Use the chaos as cover to loot an uncontested container while the fighting squad is occupied. Punish overextended teams during their extraction. Cynical but effective.

One novelty strategy worth mentioning: the Deadline Rodeo. Deadline mines can one-shot Vaporizers if planted directly on top of them. Getting above a Vaporizer, dropping onto it, planting the mine, and jumping clear is technically functional but completely impractical in a four-Vaporizer warzone. Do it once for the story.

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The loadout that covers all threats

Primary weapon: bring one of these. Hullcracker (top pick for armor penetration and rotor destruction), Dolabra (S-tier if you already own it; focused beam tears into a grounded Vaporizer’s belly core, wide cone clears Shredder packs), or Wolfpacks (strong against grouped ARC, but useless against shielded Vaporizers). Check stats for all of these in the Weapon Database.

Secondary weapon: Canto SMG for cost-effective close-range PvP on medium ammo, or Venator/Bobcat if expecting heavy Raider competition.

Equipment loadout: Surge Coil (area denial that stops Shredder flanks and serves as a PvP early warning system), Photoelectric Cloak (essential for approach, escape, and stealth breaching), Smoke Grenades (minimum 2-3; deploy before every breach), and Lure Grenades (pull ARC patrols away from your escape route).

Consumables: bring more healing than a normal raid. Vaporizer fire damage stacks and burns through supplies fast. Pack Herbal Bandages, Vita Spray, Shield Rechargers, and 4-5 Adrenaline Shots for sprint-breach-extract sequences. Note that the Dolabra uses Energy Clips (craftable from Advanced ARC Powercells + Batteries, or purchasable from Tian Wen for 3,000 coins each). Stock up before entering since map loot is reduced. Use the Crafting Planner to check material costs.

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Solo raiders face a tough but not impossible challenge

Close Scrutiny does not scale difficulty based on squad size. The same number of Vaporizers, the same ARC density, and the same Assessors spawn whether you’re solo, duo, or trio. This makes solo play inherently harder by design.

Solo is doable but rough without strong gear. The stealth approach is close to mandatory. Fighting multiple Vaporizers alone while breaching and watching for PvP burns through resources fast. The strongest solo tip across all sources is to target later Assessors, not the first one. The initial Assessor draws every squad on the server; second and third landings carry the same loot pool with dramatically less competition.

PvE lobbies are a good option for solo players and for learning the encounter. Other Raiders tend to cooperate against Vaporizers instead of fighting you, which makes things a lot easier. Buried City is considered the best map for solo Vaporizer fights because its buildings give you vertical cover.

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The fourteen mistakes that get raiders killed

The community has rapidly compiled a clear list of fatal errors in Close Scrutiny’s first week. Breaching before clearing Vaporizers tops every list. The alarm escalation on top of existing threats is unsurvivable. Fighting Vaporizers in the open is the second most common death, since their laser instantly strips light shields and sets the ground on fire. Throwing Wolfpacks or Seekers without baiting the shield first wastes your best damage. Bait the shield with a cheap thrown item, wait 7 seconds for it to drop, then throw your damage grenades during the 10-second cooldown.

Other consistent warnings: don’t drop in with a budget or free loadout (this is endgame content that demands endgame gear), don’t rush directly under the red beam without scouting, don’t ignore Surveyors (they flee and alert nearby ARC to your position during your breach), don’t try to loot all three containers solo unless the area is completely dead, don’t stay stationary too long (Shredders punish it), and never extract at the nearest extraction point to an Assessor. Those become the server’s most contested PvP zones.

Conclusion

Close Scrutiny is the first ARC Operation, and Embark has signaled more are coming. It changes the extraction loop by concentrating all the valuable loot into a single, defended objective that every squad in the raid is heading toward. The Vaporizer is genuinely different from other ARC enemies; it forces you to think about vertical cover and fight patiently instead of just pushing through. Gear up, coordinate with your squad, and accept that not every run is going to be profitable. Target later Assessors, clear before you breach, and bring more healing than you think you need.