Shells / Rook / Build

Best Marathon Rook Build — Season 2 Loadout

A complete Marathon Rook loadout — primary and secondary weapons, weapon mods, shell cores, implants, and a Cradle stat-track plan — engineered from the Rook’s playstyle and cross-referenced against real in-game stat values. Browse the full Rook shell data and every weapon behind these picks.

CUSTOMIZE THIS BUILD →
⟳ REFINE THIS BUILD
SHOWING VERIFIED CANONICAL
GOAL
RANK TARGET
EXPERIENCE
WEAPON PREFERENCE
TEAM
BUILD REPORT
“Ghost Dividend”
Rook slips into the map under Signal Mask, loots containers at maximum speed, and uses Recuperation to self-sustain between encounters without burning consumables. When contact is unavoidable, the loadout handles light UESC cleanup efficiently so you can keep moving and keep your extraction window clean.
A
LOADOUT GRADE
Weapons
Impact HAR
PRIMARY
Mid-range AR with 24 damage per shot at 400 RPM gives a healthy damage-per-magazine against UESC patrols without requiring precision play. The Flex-to-Mid range bracket matches the engagement distances Rook prefers — never pushing into CQB brawls, never stopping to snipe. It clears rooms fast enough to re-engage loot routes immediately after a fight.
Magnum MC
SECONDARY
41 damage per shot at 138 RPM on Heavy Rounds gives Rook a reliable fallback that punches hard with minimal ammo expenditure. As a scavenger shell, you want a sidearm that closes out wounded targets fast without draining your primary's Light Rounds stockpile. The Mid-range rating keeps it relevant outside pure CQB.
Weapon Mods
CHIP SLOT
Scrapyard Chip (Superior)
Directly extends Rook's core loop — defeating UESC hostiles has a chance to spawn health items or standard materials, feeding both survivability and the loot-accumulation mission. Superior rarity scales the proc chance up, meaning more consistent material drops per patrol cleared.
CHIP SLOT
Urgent Care Chip (Superior)
While missing health after a patrol skirmish, kills with this weapon grant stacking Self-Repair speed bonuses. This directly amplifies Recuperation's already slow heal channel by stacking into faster regen windows after combat ends — exact values are unconfirmed but the scaling-with-rarity design makes Superior tier worthwhile here.
MAGAZINE SLOT
Combat Mag (Superior)
Sources list this at range +20 and magazine_size +6 for the Impact HAR. The range extension pushes the HAR further into mid-range dominance, letting Rook engage patrols from safer distances under or after Signal Mask. The extra 6 rounds mean fewer reload interruptions mid-loot-route — critical when you cannot afford to be caught reloading near a container.
BARREL SLOT
Steady Barrel (Superior)
Greatly increases stability, ready speed, and accuracy while moving. Rook is almost always repositioning between containers — shooting on the move without ADS is a real scenario. Better ready speed also means faster weapon swap after transitioning out of Signal Mask.
OPTIC SLOT
Rangefinder Optic (Superior)
Sources list ads_zoom +0.6 and ads_spread -0.2. The spread reduction tightens the HAR's mid-range shot grouping, and the accuracy-while-moving bonus stacks with Steady Barrel for a mobile engagement profile that fits Rook's constant repositioning cadence.
GRIP SLOT
Snapshot Grip (Enhanced)
Slightly increases accuracy while moving and ADS speed. Pairs with Rangefinder Optic and Steady Barrel to build a movement-accuracy stack across three mod slots, letting Rook fire accurately during the brief windows between sprinting legs without committing to a stationary ADS stance.
Shell Cores
The Big Score (Standard, Universal)
PASSIVE
After opening a locked door or container, Loot Speed is temporarily greatly increased. Rook already has the highest base loot speed of any shell — stacking a temporary Loot Speed surge on top of that after every locked container creates a compounding loop where high-value nodes get vacuumed faster than any other shell configuration possible.
Cash Flow (Standard, Unknown)
PASSIVE
Opening an unlooted container pings a nearby data card. This is pure map-knowledge and credit-farming synergy — exactly what the scavenger loop demands. Each container opened auto-scouts the next high-value target, drastically reducing dead movement time between loot nodes.
Implants
HEAD
Regen V4 (Superior)
Self-Repair Speed: 50%, Revive Speed: 20%
Recuperation's heal-over-time channel is Rook's primary sustain mechanism, and the 50% Self-Repair Speed bonus directly shortens the time-to-full-health window after each patrol skirmish. Faster Recuperation means more time looting and less time hiding behind cover waiting to regen. The Revive Speed bonus is secondary but useful in rare duo situations.
TORSO
Nimble Fingers V2 (Enhanced)
Loot Speed: 25%, Agility: 5
25% Loot Speed stacks directly on top of Rook's base loot speed advantage and The Big Score core burst. Agility +5 adds marginal repositioning speed. The Ballistic Resistance passive from this implant reduces incoming UESC ballistic damage — a meaningful survivability layer since most patrol contact involves ballistic fire.
LEGS
Graceful Landings V4 (Superior)
Melee Damage: 20, Agility: 20, Fall Resistance: 50%
Agility +20 is the highest single-implant Agility value available in the Legs slot with confirmed utility, meaningfully increasing repositioning speed between loot nodes. Fall Resistance +50% enables vertical map movement — dropping between floors to reach containers quickly or evade contact. The Frenzy Matrix passive (tactical recharge rate and sprint speed after kills) directly feeds Signal Mask's uptime by recharging it faster after UESC clears.

◇ Rook Cradle Build — Season 2 Stat Plan

Free respec · resets each season
Primary investment in Dexterity for Loot Speed and sprint mobility, with secondary Resistance investment to support Recuperation's self-sustain and reduce bleed-out risk if a patrol fight goes wrong.
DEXTERITY TRACK
5 ENERGY
PERK · Loot Siphon
Opening unlooted containers grants Tactical energy — exact values are unconfirmed, but this directly feeds Signal Mask's cooldown, letting Rook re-engage stealth faster after each container interaction. The Dexterity track's Agility and Loot Speed stat gains are the single most important Cradle investment for this shell.
DEXTERITY TRACK
14 ENERGY
PERK · Full Throttle
Gain Cardio Kick effects at the start of every run — exact values unconfirmed, but a sprint-speed bonus from deployment means Rook reaches high-value loot nodes before other shells even land. Commit the full 14 Energy to complete this track first before splitting into Resistance.
RESISTANCE TRACK
3 ENERGY
PERK · Scab Factory
Bleeds out more slowly when downed. Since Rook plays solo with no ranked safety net, extending bleed-out time is a direct risk-mitigation tool — exact duration is unconfirmed but the effect pairs well with the scavenger's lone-wolf extraction priority.
RESISTANCE TRACK
14 ENERGY
PERK · Field Medic
Medical consumables take less time to use — exact reduction unconfirmed, but faster consumable use directly compounds with Recuperation's self-sustain loop and the Scrapyard Chip's material drops, keeping Rook healthy and mobile across a full loot run with minimal downtime.
STRENGTHS
+Loot Speed stack from Nimble Fingers V2 (+25%), Rook's base loot speed advantage, and The Big Score core's post-container burst creates the fastest container clearing of any shell configuration
+Signal Mask + Loot Siphon Cradle perk creates a self-reinforcing stealth loop — looting generates Tactical energy, which refills Signal Mask, which enables safer approach to the next container
+Recuperation amplified by Regen V4's 50% Self-Repair Speed bonus means combat downtime between UESC encounters is measured in seconds rather than full healing cycles, keeping the run moving
WEAKNESSES
−120 base HP with no shield slot investment means a caught-out-of-stealth scenario against multiple UESC contacts or a hostile Runner is survivable only if Recuperation can channel — any damage interruption during the heal stalls the sustain loop entirely
−Solo format with no ranked upside means the build has no escalation path — if loot density is low or contested, Rook has no combat power spike to fall back on, and the Impact HAR's unconfirmed stats mean its ceiling in extended firefights is uncertain
RANKED NOTE
Rook cannot be selected in ranked by design — this build is unranked-only and there is no rank score target applicable.
⬢ Build Analysis
Ghost Dividend is the most honest expression of Rook's design philosophy: you are a loot vacuum with legs, not a fighter. The Impact HAR at 24 damage and 400 RPM handles UESC cleanly at the mid-range distances Signal Mask lets you choose — you never walk into CQB, you dictate range. The Magnum MC at 41 damage closes out anything that survives the HAR burst without burning your Light Rounds reserve. The real architecture is in the stack: Nimble Fingers V2's confirmed 25% Loot Speed on top of Rook's native advantage, The Big Score core triggering after every locked container, and Cash Flow auto-pinging the next data card — that is a compounding loot loop, not a linear one. Regen V4's confirmed 50% Self-Repair Speed means Recuperation fires fast enough that you treat it like a cooldown ability rather than a retreat mechanic. Scrapyard Chip on the HAR means UESC kills generate materials passively. Graceful Landings V4's Agility +20 and Frenzy Matrix passive refeed Signal Mask uptime after kills. Full Dexterity Cradle to 14 Energy, then Resistance to Field Medic — that is the exact path. This build does not win fights. It makes fights irrelevant.
LIVE
STEAM3.1KRUNNERS ONLINE
TWITCH721WATCHING · 12 LIVE