Shells

Proxima

The Broodseeker · Playable Shell

Proxima is an aggressive Lightning Shell who uses Biosampler to pull targets or herself into range, then survives the commitment through conditional Grafted Armor mitigation.

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On this pageOverview

Field profile

Overview

Proxima base attributes
Health	100
Resolve	100
Bleed resistance	8
Frost resistance	5
Shock resistance	7
Curse resistance	8

Best for

Aggressive melee players
Lightning and Shock builds
Players who like gap-closing tools

Strengths

Flexible engage tool that can pull enemies or move Proxima
Strong Lightning scaling and Shock payoff
Conditional mitigation prevents stagger during aggressive commitments

Tradeoffs

A missed or mistimed hook can place Proxima in danger
Biosampler competes with sidearms for Resolve
Mitigation is chance-based until specific skill conditions are met

Recruitment site

Blackridge Cliffs

Recruit Proxima at the Shell recruitment site in Blackridge Cliffs.

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Core kit

Core abilities

Passive trait

Grafted Armor

Passive

Proxima has a base 15% chance to mitigate melee or ranged damage. Mitigated damage is reduced by a base 50% and prevents stagger.

Active Shell ability

Biosampler

Active

Proxima fires a hook from her left arm, pulling enemies or herself into range before striking with a follow-up attack that inflicts Lightning .

Resolve cost: 50
Cooldown: 7s

How to play

Proxima combat guide

Use Biosampler as both an engage and a position correction. The cleanest build keeps enough Resolve for the hook, stacks Lightning through weapon attacks, and uses mitigation windows to stay on top of a staggered or shocked target.

Field sequence

Combat loop

4 steps

01Build Resolve and Lightning with safe weapon pressure.
02Use Biosampler when the pull or movement will create a confirmed follow-up.
03Stay close through the mitigation window and trigger Shock before the target recovers.
04Harvest samples during exploration, then protect the permanent Biohunter gain rather than taking needless trades.

Upgrade order

Ability priorities

5 picks

01Attunement
02Biohazard
03Ampereon
04Collector
05Biohunter

Bond path

Progression plan

early

Attunement and Biohazard make Biosampler affordable and threatening; Ampereon establishes the Lightning plan.

mid

Collector and Biohunter turn samples into permanent progression, while Discharge adds control after a successful hook.

late

Fortress and Exoshell strengthen mitigation windows; Energize and Reflection add high-value defensive conversions.

Build craft

Weapon and Tarstone synergies

Weapons & sidearms

Tarstones

Field notes

Keep a Resolve reserve for Biosampler instead of firing the sidearm whenever it is available.
A hook is safest after a whiff, stagger, or ranged wind-up.
Biohunter has explicit caps: 15% at level 1, 20% at level 2, and 30% at level 3.

Interactive progression

Skill tree

Open a Bond Tier branch to inspect its skills, Shell Point costs, and every upgrade level. Tier lines show unlock order; skills inside the same tier remain independent purchases.

Shell coreProxima4 Bond Tiers · 12 skill branches

Bond Tier 13 skills · unlock this tier before purchasing its nodes
1. 01Ampereon3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 1Level costs: 1 / 2 / 3
  Open full skill entry ↗
  1. Level 1Proxima has +50% Lightning mitigation
  2. Level 2Proxima has Lightning immunity
  3. Level 3Shock damage and radius are doubled
2. 02Attunement3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 1Level costs: 1 / 2 / 3
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  1. Level 1Biosampler costs 20% less Resolve
  2. Level 2Biosampler costs 30% less Resolve
  3. Level 3Biosampler costs 50% less Resolve
3. 03Exoshell4 levels · 1 / 2 / 3 / 4 Shell Points
  Bond Tier 1Level costs: 1 / 2 / 3 / 4
  Open full skill entry ↗
  1. Level 1Proxima has +100% mitigation chance while using Biosampler
  2. Level 2Proxima has +25% mitigation chance while aiming
  3. Level 3Proxima has brief +30% mitigation chance after dodging
  4. Level 4Proxima has +30% mitigation chance while sprinting
Bond Tier 23 skills · unlock this tier before purchasing its nodes
1. 01Biohazard4 levels · 1 / 2 / 3 / 4 Shell Points
  Bond Tier 2Level costs: 1 / 2 / 3 / 4
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  1. Level 1Biosampler deals 150% more damage
  2. Level 2Biosampler inflicts 3 additional Lightning stacks
  3. Level 3Biosampler deals 180% more damage
  4. Level 4Biosampler inflicts 5 additional Lightning stacks
2. 02Biohunter3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 2Level costs: 1 / 2 / 3
  Open full skill entry ↗
  1. Level 1Proxima has 0.5% permanent damage increase per sample, up to 15%
  2. Level 2Proxima has 0.8% permanent damage increase per sample, up to 20%
  3. Level 3Proxima has 1% permanent damage increase per sample, up to 30%
3. 03Reflection3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 2Level costs: 1 / 2 / 3
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  1. Level 1Projectiles have 15% chance to cause no damage to Proxima
  2. Level 2Projectiles have 35% chance to cause no damage to Proxima
  3. Level 3Nullified projectiles have 100% chance to be reflected back to the attacker
Bond Tier 33 skills · unlock this tier before purchasing its nodes
1. 01Collector3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 3Level costs: 1 / 2 / 3
  Open full skill entry ↗
  1. Level 1Proxima has 20% chance to harvest a Specimen
  2. Level 2Proxima has 40% chance to harvest a Specimen
  3. Level 3Proxima has 35% chance to harvest +2 Specimens
2. 02Seizure3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 3Level costs: 1 / 2 / 3
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  1. Level 1Biosampler inflicts 20 Stasis stacks
  2. Level 2Biosampler deals 50 splash damage and 100 Stagger Damage
  3. Level 3Biosampler deals 80 splash damage and 150 Stagger Damage
3. 03Shellshock3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 3Level costs: 1 / 2 / 3
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  1. Level 1Proxima gains 10 Resolve
  2. Level 2Proxima gains 15 Resolve
  3. Level 3Proxima inflicts 10 Lightning stacks to the attacker
Bond Tier 43 skills · unlock this tier before purchasing its nodes
1. 01Discharge3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 4Level costs: 1 / 2 / 3
  Open full skill entry ↗
  1. Level 1Biosampler knocks back the struck enemy and triggers a Lightning storm that lasts for 6s
  2. Level 2Biosampler knocks back the struck enemy and triggers a Lightning storm that lasts for 9s
  3. Level 3Biosampler knocks back the struck enemy and triggers a Lightning storm that lasts for 10s
2. 02Energize3 levels · 1 / 2 / 3 Shell Points
  Bond Tier 4Level costs: 1 / 2 / 3
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  1. Level 1Grafted Armor always mitigates damage for 8s
  2. Level 2Proxima releases a shockwave that inflicts 15 Lightning stacks
  3. Level 3Proxima has 30% chance to fully restore Resolve
3. 03Fortress4 levels · 1 / 2 / 3 / 4 Shell Points
  Bond Tier 4Level costs: 1 / 2 / 3 / 4
  Open full skill entry ↗
  1. Level 1Mitigated damage effectiveness increased by 110%
  2. Level 2Mitigated damage effectiveness increased by 115%
  3. Level 3Mitigated damage effectiveness increased by 122%
  4. Level 4Mitigated damage effectiveness increased by 133%

Video guide

Build video

Mortal Shell 2 Proxima Build Guide - How to Play Proxima

Lightning build, abilities, skill priorities, weapons, Tarstones, and final tips

Channel: Fextralife ↗
Published: 2026-08-18
Length: 11m 42s

Watch on YouTube ↗

Memories

Proxima memory costs and rewards
A Bad Deal	Cost 500 · Reward 500
A Life For A Life	Cost 500 · Reward 500
The Endeavor	Cost 500 · Reward 500
The Exchange	Cost 500 · Reward 500
The Weapon	Cost 500 · Reward 500