Iron Marines+ Mission 15 Guide: How to Beat Icebreaker with Fate

To beat Mission 15: Icebreaker in Iron Marines+ using Fate, rely on stealth reconnaissance, remote explosive traps, and disciplined lane defense anchored by turrets. Send Fate ahead while cloaked to eliminate heavy threats before engagement, secure peripheral Ether nodes to maintain your economy, and pull enemy waves back into fortified choke points rather than fighting exposed on open ice.

Fate's Tactical Role and Ability Use

Fate functions as a long-range assassin and saboteur who controls the pace of combat across narrow icy lanes. Her sniper rifle allows her to pick off high-durability enemies—such as armored walkers and heavy melee brutes—before they reach your frontline.

Stealth Cloaking: Activate her cloak to move past enemy skirmish lines, scout fogged terrain, and reach fortified nests without taking fire.
Explosive Traps: Drop remote explosive charges directly on choke points or enemy spawn routes. Detonate them once groups cluster together.
Targeted Snipe: Reserve her heavy sniper ability for elite ranged attackers and heavy units to stop them from dealing area-of-effect damage to your combat squads.

Early Setup and Securing the First Ether Node

The opening phase requires quickly establishing your economy while defending against wandering native creatures. Do not march unassisted infantry into unexplored territory.

Fortify the Main Entry: Build a Gatling or light rocket turret at the starting base ramp to absorb initial roaming skirmishers.
Scout Cloaked: Move Fate ahead in stealth toward the nearest Ether refinery to identify the guard composition without drawing aggro.
Eliminate Defenders: Use Fate's targeted snipe on the toughest guard at the node, then drop an explosive charge to clear any surrounding light infantry.
Capture and Build: Bring in your combat squad to capture the node, construct an Ether extractor immediately, and erect a defensive turret to hold the position.

Securing this initial node provides the steady resource income needed to replace lost units and purchase squad upgrades.

Squad Composition and Unit Roles

Because Fate handles single-target burst damage and sabotage, your army must provide frontline durability and sustained fire.

Unit Type	Role in Icebreaker	Synergy with Fate
Brawlers / Guardians	Frontline absorption; blocks aggressive melee waves.	Keeps enemies grouped while Fate snipes from safety.
Snipers / Rangers	Sustained long-range DPS from elevated ground.	Focuses down targets weakened by Fate's explosive charges.
Walkers / Mechs	Armored fire support and node anchor.	Absorbs heavy structural attacks during late-stage pushes.
Drop Turrets / Drones	Rapid reinforcement for surprise breaches.	Provides temporary cover fire when Fate must retreat to re-cloak.

Keep Fate positioned slightly behind your Brawlers or offset along ridge lines. Let your armored units take initial aggro so Fate can line up sniper shots without interruption.

Clearing Choke Points and Breaching Final Bases

Mission 15 funnels your forces through narrow corridors bordered by frozen hazards. Rushing through these funnels can trap your squads in crossfire.

To push through bottlenecks safely:

Send Fate forward in stealth to spot barricades and nests.
Lay explosive charges in the center of the path.
Pull your mainline squad back toward your nearest turret.
Detonate the traps as enemies pursue, then engage the survivors with concentrated ranged fire.

When approaching the final enemy encampments, do not charge the entire base at once. Use Fate's cloak to slip past perimeter barricades and place explosive charges directly on enemy production structures and elite summoners. Once those key targets are weakened or destroyed, advance your mechanized units and infantry to clean up the remaining forces while falling back to your turret line if counter-attacks become overwhelming.