Cerberus

Cerberus is the siege engine of Marathon's Runner Shell lineup — a tank built to absorb punishment, hold ground, and deal it back with interest. With the highest base health and armor rating of any Shell, Cerberus embodies a straightforward design philosophy: be tougher than everything trying to kill you. It is the most recommended Shell for new runners, and it remains competitive at the highest levels of play for experienced players who want to dominate chokepoints and frontline squad compositions.

The Damage Feedback passive is what elevates Cerberus from a simple health sponge to a genuine combat threat. Returning 15% of all incoming damage to attackers means that in sustained firefights, Cerberus punishes enemies for engaging it at all. Against large groups of AI constructs, the reflected damage stacks across multiple attackers, effectively turning Cerberus into a damage amplifier as well as a damage absorber. In PvP, the passive makes rival runners hesitate before committing to a prolonged engagement.

Abilities

Iron Bulwark (Prime Ability)

Deploy an indestructible forward-facing shield that blocks all incoming damage from one direction for 4 seconds. Cerberus moves at reduced speed while Bulwark is active but can still maneuver laterally. The 25-second cooldown means Bulwark is available approximately every engagement. Strategic use involves activating Bulwark while closing distance to enemy positions — reaching melee range or forcing a flank, then disabling Bulwark and switching to Seismic Slam or heavy weapons.

Seismic Slam (Tactical Ability)

Slam the ground to stagger and damage all enemies within 8 meters for 80 damage and a 3-second movement slow. Seismic Slam is a crowd control tool that excels against groups of AI enemies and creates openings against rival Runners who have grouped for a push. Against MEKA Combat Walkers and Hunter Alphas, the stagger interrupts their most dangerous attacks.

Synergies and Faction Investment

Cerberus pairs naturally with Sekiguchi Heavy Industries faction investment: Tier 2 armor upgrades specifically improve Cerberus's base armor rating, Tier 4 provides a MEKA combat drone companion that fights alongside Cerberus in extended engagements, and Sekiguchi's contract philosophy matches Cerberus's combat-oriented playstyle. For a complete Cerberus build, combine Sekiguchi for combat gear with NuCaloric for healing support — the combination makes Cerberus essentially unkillable in most AI engagement scenarios.