Assassin Knife Build — Marathon

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GOAL

RANK TARGET

EXPERIENCE

WEAPON PREFERENCE

TEAM

BUILD REPORT

“Ghost Blade”

Slip into Active Camo, flank isolated high-value targets, and close the distance for a devastating cloaked Knife strike amplified by Silent Killer and Shadow Strike. After the kill, throw a Smoke Disc via Smoke Screen or Shadow Dive to vanish back into the fog, reset the engagement, and repeat on the next target.

A

LOADOUT GRADE

RANKED VIABLE

Weapons

Knife

PRIMARY

The Knife is the build's identity weapon. Its damage is listed at 80 per hit — though the exact value is unconfirmed — making it the highest single-hit melee option in the database. Combined with Silent Killer (massive bonus damage from behind while cloaked) and Shadow Strike (greatly increased damage when attacking from invisibility), the Knife's raw burst potential from stealth is unmatched. Its CQB range and zero ammo dependency perfectly suit a flanking runner who never wants to reload mid-approach.

Magnum MC

SECONDARY

The Magnum MC deals a confirmed 41 damage per shot at 138 RPM out of a 12-round Heavy Round magazine at Mid range. It fills the critical gap when a target survives the Knife opener, is not in melee range, or when Active Camo has been disrupted. Its high per-shot damage means two or three rounds finish a wounded target efficiently without sustained exposure. Heavy Rounds are a distinct ammo pool from the Knife's None economy, keeping both slots independently resourced.

Weapon Mods

CHIP SLOT

Cloudborn (Standard)

While in smoke, this mod gives increased stability, accuracy, handling, and movement speed. This is a direct, confirmed-effect synergy: the Assassin generates smoke constantly via Smoke Screen, Shadow Dive, and Ghost Protocol-extended fields. Every engagement reset happens inside a Smoke Field, meaning Cloudborn is active during exactly the moments you're repositioning or setting up the next Knife strike.

CHIP SLOT

See Ya (Superior)

Reloading this weapon on an empty magazine causes you to become briefly invisible — exact duration unconfirmed. The Knife has a magazine of 1, meaning every single attack cycle triggers a reload, which means every cycle can trigger a brief invisibility window. This creates a compounding stealth loop: attack from Active Camo, reload, go briefly invisible again, reposition. Exact values are unconfirmed but the mechanical trigger fires every use.

CHIP SLOT

Blue Blood (Superior)

Downing a hostile Runner restores health — exact amount unconfirmed. As a solo 120 HP runner with no shields baseline, any health return on a successful kill directly extends survivability after the initial Knife engagement. This is the closest thing to sustain available on the Knife's chip slot, and it fires exactly when the build is working correctly: a successful high-value target elimination.

Shell Cores

Silent Killer

PASSIVE

Melee attacks from behind while cloaked deal massive bonus damage — exact multiplier unconfirmed. This is the build's primary damage amplifier and the entire reason the Knife is viable as a primary. The combo is: activate Active Camo, flank behind the target, land the Knife strike. Silent Killer fires on that exact condition. Its synergy with Shadow Strike means both cores stack their bonuses simultaneously on the same attack.

Shadow Strike

PASSIVE

Your Utility Knife deals greatly increased damage when attacking from invisibility. This is an S-tier confirmed meta core that directly multiplies Knife damage on the build's defining engagement pattern. Alongside Silent Killer, this means a cloaked rear Knife strike is hitting with two simultaneous damage bonuses, making the 80-damage base (unconfirmed) hit far harder. This is the core that makes the build graduate from gimmick to threat.

Ghost Protocol

PASSIVE

Your smoke fields last longer before dissipating. Shadow Dive's smoke lasts only 4 seconds baseline — Ghost Protocol directly extends this window, giving you more time to reposition inside cover after a Knife attack. Smoke Screen fields last 20 seconds and become even more dominant reset tools with this core active. Longer smoke means more Cloudborn uptime, more repositioning safety, and harder target acquisition for enemies hunting you.

Safe Landings

PASSIVE

Your Shadow Dive knocks nearby hostiles away when you land and creates a longer-lasting smoke field. This is A-tier and directly empowers the flanking dive approach: drop from height into a group, knock them off balance, land inside extended smoke, and immediately take the Knife angle on a disoriented target. It also negates fall damage risk on aggressive dives, which matters for a solo runner with only 120 HP.

Implants

HEAD

Energy Harvesting V4 (Superior)

Firewall: -5, Tactical Recovery: 40%

Active Camo is the Tactical ability powering every engagement. Tactical Recovery at 40% means Active Camo comes back substantially faster between fights, enabling the repeated flanking pattern. The Firewall penalty of -5 is a minor tradeoff on a build that avoids sustained gunfire entirely. This implant directly funds the kill loop: more Active Camo uptime equals more Silent Killer and Shadow Strike windows per run.

TORSO

Knife Fight V4 (Superior)

Hardware: -10, Melee Damage: 50, Fall Resistance: 20%

Melee Damage at +50 is the single largest melee damage stat available in the database and directly amplifies the Knife's base damage alongside Silent Killer and Shadow Strike. The Fall Resistance bonus has direct synergy with aggressive Shadow Dive flanks. The Hardware penalty of -10 is a real cost on a 120 HP no-shield runner — mitigated by the fact that this build wins fights before taking return fire, not by tanking hits.

LEGS

Graceful Landings V4 (Superior)

Melee Damage: 20, Agility: 20, Fall Resistance: 50%

Adds another +20 Melee Damage stacking onto Knife Fight V4, bringing total melee damage implant contribution to +70 before core multipliers. The Agility +20 directly improves flanking speed and repositioning. Fall Resistance at 50% combined with Shadow Dive's no-fall-damage trait makes aerial engagement approaches completely safe. The passive Frenzy Matrix — defeating a hostile increases tactical recharge and sprint speed — directly feeds Active Camo uptime after kills, closing the loop.

◇ Assassin Cradle Build — Season 2 Stat Plan

Free respec · resets each season

Primary investment in Strength for Knife damage amplification and heat management during melee combos, with secondary investment in Recharge to reduce Active Camo downtime between engagements.

STRENGTH TRACK

11 ENERGY

PERK · Close & Personal

Melee and knife attacks generate less heat — exact reduction unconfirmed but critical for a build that chains multiple Knife strikes per engagement. The Assassin generates heat from Active Camo usage and Shadow Dive, so reducing heat from the actual attack prevents the build from overheating during its kill window. Finisher Protection at 6 Energy is also taken en route, reducing damage during the animation that follows a successful Knife down.

STRENGTH TRACK

14 ENERGY

PERK · Leech

Knife attacks restore a small amount of health — exact value unconfirmed. On a 120 HP solo runner with no shields, any passive health return per Knife strike is meaningful sustain. Combined with Blue Blood (health on Runner down), this gives the build two health return vectors tied directly to its win condition of successful Knife engagements.

RECHARGE TRACK

4 ENERGY

PERK · Head Start

Start runs with partial Tactical charge — exact amount unconfirmed. Active Camo being partially charged at run start means the first flank can happen sooner after landing, reducing the vulnerable opening window where the Assassin must operate without invisibility.

RECHARGE TRACK

14 ENERGY

PERK · Lethal AMP

Downing a Runner grants Tactical energy and eliminating grants Prime energy — exact amounts unconfirmed. This directly rewards the build's high-value target elimination focus: every Runner kill refunds ability energy, letting Active Camo and Smoke Screen cycle back faster in multi-target scenarios. This perk is what keeps a solo Assassin competitive against squads by compressing the time between cloaked flanks.

OPEN THE CRADLE PLANNER →

STRENGTHS

+Silent Killer and Shadow Strike stack simultaneous damage multipliers on the same Knife hit from cloaked flanks, creating one-shot or near-one-shot potential on high-value targets from stealth

+Energy Harvesting V4's 40% Tactical Recovery combined with Graceful Landings V4's Frenzy Matrix passive creates a tight Active Camo recharge loop: kill, sprint speed and tactical recharge spike, re-engage cloaked faster

+Ghost Protocol extended smoke fields plus Cloudborn's confirmed in-smoke stat bonuses mean every post-kill reset happens inside a buffed state, maintaining handling and movement advantages during repositioning

WEAKNESSES

−Knife Fight V4's Hardware -10 and Knife Fight V2's baseline tradeoffs leave an already fragile 120 HP, no-shield runner with reduced physical durability — any engagement that goes wrong before the Knife lands is likely fatal

−The Knife's CQB range and magazine of 1 mean any mid-to-long range forced engagement falls entirely on the Magnum MC's 12-round magazine, which can be exhausted quickly against multiple targets without a reload window

RANKED NOTE

This is a casual build with no ranked constraints — it is viable for Solo Ranked A tier given the Assassin's rated Solo A ranking, but the Knife's skill ceiling is steep and ranked performance will depend heavily on execution consistency rather than build optimization.

⬢ Build Analysis

Ghost Blade is what happens when you stack a core damage system properly instead of picking cores for flavor. Silent Killer and Shadow Strike aren't redundant — they're multiplicative intent. The Knife's damage is listed at 80 base (unconfirmed), and you're piling Knife Fight V4's +50 Melee Damage, Graceful Landings V4's +20 Melee Damage, and the Strength track's Leech and Close & Personal on top before either core bonus fires. That's a cloaked rear strike hitting with a combined melee damage stack of +70 in implants alone, then Silent Killer's massive bonus, then Shadow Strike's invisibility damage amplifier, simultaneously. The Cloudborn chip is the sleeper pick here — confirmed effect, always active on this shell. You're not building smoke as a defensive tool, you're building it as a persistent combat buffer. See Ya's reload-into-invisibility creates a micro-reset after every single Knife cycle. Recharge track's Lethal AMP is the solo carry engine: down a high-value target, instantly bank Tactical and Prime energy, re-enter the next fight cloaked. This build punishes passive players hard and rewards aggressive flanking reads.

Best Marathon Assassin Knife Build — Season 2 Loadout

◇ Assassin Cradle Build — Season 2 Stat Plan