Arc Raiders Close Scrutiny: The Complete Guide

Close Scrutiny is Arc Raiders’ first ARC Operation, a PvPvE map condition that spawns Assessors: massive 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 but the loot inside isn’t the usual locked-room quality, 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. Trials challenge points also earn at 2x rate during Close Scrutiny.

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. A Surveyor drone fires a blue beam upward, and moments later the Assessor crashes down like a meteor at a randomized position. Each Assessor emits three red beams visible from anywhere on 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. Each Assessor has three independent containers, so a full squad can breach all three simultaneously for maximum yield.

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 punishing 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), the Aphelion Energy Rifle (precision shots), and the Dolabra itself (focused ADS beam disrupts flight sensors).

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 should be cleared before approaching any Assessor, since they call in reinforcement waves when they detect players.

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, required for the High-Gain Antenna Project (stages 2 and 3) and various upgrade paths.
• Vaporizer Regulators - dropped by killed Vaporizers, not from containers. You need 19 total for the High-Gain Antenna Project. 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 is a community-driven seasonal project that unlocks 500 Raider Tokens for the Wasp Hunter cosmetic set (four outfit colorways, Diver Backpack, Scrappy Helmet, Thruster Hammer tool) and permanent crafting bench upgrades.

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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 DPS/clearing, and one to breach. Coordinate simultaneous breach on all three containers. 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 grounds Vaporizers, wide cone clears Shredder packs), or Wolfpacks (devastating 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 an unforgiving 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 compound reinforcement waves 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.