Marathon Runner Shells Tier List: All Classes Ranked

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Marathon's seven Runner Shells work more like classes than characters. Forget the hero shooter setup. Each Shell has its own ability kit and shapes how you approach fights, looting, and survival. Picking the right one and knowing how to use it properly is the difference between a clean extraction and losing everything you brought in.

This guide covers every Runner Shell in detail: what their abilities actually do, how the kit fits together, which weapons and Cores work best with them, and how they slot into team compositions. A full tier list is included to help you figure out where to start.

How Runner Shells Work

Each Runner Shell comes with three components:

• Prime Ability: A powerful skill on a long cooldown, similar to an ultimate
• Tactical Ability: A secondary active skill you'll use more frequently
• Traits: Two passive or weaker active skills that are always available

On top of the base kit, each Shell can slot Shell specific Cores, which are loot drops found during runs that add bonuses and modify how abilities work. Cores come in multiple quality tiers, with legendary versions being the strongest. Since Cores are loot, you can lose them if you fail to extract. Treat the good ones accordingly.

Marathon Runner Shell Tier List

None of these are bad picks. Every Shell does something well, and the B tier options are still capable in the right hands. They just have more situational limits than what's above them.

S Tier Runner Shells

Triage Abilities

Why Triage Is S Tier

Medical supplies are scarce on Tau Ceti, and they're especially hard to keep stocked early in a run. Triage takes that pressure off entirely. Med Drones deliver consistent healing to the whole team during and between fights, so you're not constantly rationing health items. Shareware.exe pushes this further by spreading the effect of Patch Kits and Shield Chargers across every teammate with an active drone, so each consumable goes further than it would with any other Shell.

Reboot+ is Triage's most impactful ability. Reviving a downed teammate from range removes the enormous risk of running into an active firefight to pick someone up. It's not a niche trick; it's a team fight tool that can completely swing a bad engagement. The EMP function is less commonly your first choice, but when you pair volt type weapons with Battery Overcharge, Triage can break an enemy's shield and immediately EMP them. That's real offensive output, not just passive healing from the back line. Med Drones can also stop downed allies from bleeding out, buying your team more time to clear the area before going for a revive.

Vandal Abilities

Why Vandal Is S Tier

Marathon's default movement is slow and sprint is limited by design. Vandal breaks that constraint harder than anything else in the game. The double jump from Microjets, the extended slide from Powerslide, and Amplify together form the strongest mobility package available. You can reposition during a fight, chase down kills, or get out of situations that other Shells simply can't recover from.

Disrupt Cannon is more useful than it looks. Beyond the explosive damage, it launches anything near the impact point a significant distance - enemies, and even yourself. Flush enemies out of healing cover, knock opponents off high ground, break up a tight cluster of hostiles. A fully charged shot deals more damage and covers a bigger area, so patience with the charge time pays off. For players with strong mechanical skills, Vandal has the highest damage potential in the game.

Assassin Abilities

Why Assassin Is S Tier

In an extraction shooter, getting spotted first usually means dying first. Assassin's kit is built to prevent exactly that. Active Camo and Smoke Screen together let you approach, engage, and disengage on your own terms in a way no other Shell can pull off.

The abilities chain together well. Shadow Dive creates a smoke cloud when you land, which immediately triggers Shroud's automatic invisibility. Every time you drop into a new position from the air, you arrive cloaked. Smoke Screen puts down a line of clouds that blocks visibility and disrupts enemy optics, and anyone stepping into it is fighting blind while you move through it invisible. Controlling when and how fights start is a consistent advantage, and Assassin does it better than anyone.

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A Tier Runner Shells

Recon Abilities

Why Recon Is A Tier

Echo Pulse is effectively a wall hack on a cooldown. Before pushing a contested area, pulsing tells your team exactly where every nearby enemy is - including Assassins while cloaked. It makes ambushes nearly impossible and lets you set up positioning before the first shot is fired. Even when the ability is cooling down, Interrogation and Stalker Protocol keep feeding you information passively. You know when you're being tracked, and shield breaks reveal movement paths.

Tracker Drone adds real offensive value beyond the intel role. Overheating an enemy limits their movement and applies burn damage. It's a disable, and it pairs well with any aggressive push from teammates. Sniper rifles are the natural fit here: pulse to find enemies, pick them off at range before they know you're there. An SMG focused medium range build also works and makes you less reliant on teammates to act on your information, though you give up the safety that distance provides.

Rook Abilities

Why Rook Is A Tier

The restrictions make Rook look weak on paper, but faction upgrade investment changes that picture quickly. CyAc's Carrier capstone gives you a Deluxe Backpack at the start of every run. Arachne's Boomstick capstone hands you the WSTR Combat Shotgun for free. These are meaningful starting advantages that grow as you invest in the relevant factions, and Rook has real potential to be one of the stronger Shells at higher progression levels.

The low baseline is real, though. No passive traits and basic starting gear mean Rook starts weaker than everything else. Treat it as a long term investment and a good way to learn maps and mechanics without putting your main loadout on the line.

B Tier Runner Shells

Destroyer Abilities

Why Destroyer Is B Tier

Destroyer is the most defensive Shell in the game. Riot Barricade lets you walk into contested spaces and absorb fire while your team works around you. Search and Destroy's homing missiles add offensive pressure without demanding precise aim - sustain fire on a target and the immobilizing shots come automatically. Thruster and Tactical Sprint give Destroyer solid mobility for a Shell that's primarily built to hold ground.

The B tier placement comes down to what Destroyer doesn't bring. No intel, no healing. It's a capable frontliner, but it doesn't make your teammates stronger the way the Shells above it do. Running Recon or Thief alongside Destroyer to cover the awareness gap is a good idea.

Thief Abilities

Why Thief Is B Tier

X-Ray Visor is Thief's standout feature, and it's the only Shell in the game that can check enemy loot rarity before deciding whether to fight. If you're running blue rarity gear and hunting for purple upgrades, the visor tells you which enemies are worth engaging and which ones will just drain your resources for nothing. That kind of engagement control adds up over a full run.

Grapple Device pairs naturally with sniper rifles, opening repositioning angles other Shells can't reach. The Finer Things trait also means Thief gets stronger as the run goes on. More backpack contents means faster Grapple recharges and better weapon handling, with no extra effort required. Pickpocket Drone takes you fully out of combat while you're controlling it - only use it when you're confident the area is clear. Thief's utility is real, but it's narrower than what the top tier Shells bring, which is what keeps it at B tier.

Team Composition Guide

Heat Management

A few Shells generate Heat as a side effect of their abilities:

• Vandal's Microjets and Powerslide both generate extra Heat on use
• Destroyer's Tactical Sprint also increases Heat production
• Vandal's Amplify reduces Heat generation from movement abilities while it's active, so time it during extended mobility sequences to avoid overheating
• Recon's Tracker Drone overheats enemies on hit, limiting their movement and dealing burn damage over time. Heat is something you manage on your own Shell and something you can inflict on opponents

Shell Selection Quick Reference

Full Ability Reference

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