Iron Marines+ Darkest Hour Spec Ops Mission Guide

To beat the Darkest Hour special operation in Iron Marines+, lock down your primary base entrance with a turret and combat squad, use your hero to absorb early burst damage, and expand to secondary ether nodes between assault waves.

Fortifying the Base Entrance and Early Economy

Early enemy squads apply immediate pressure to your base. Spending your initial ether on defensive stability prevents your command hub from taking structural damage.

• Anchor the choke point: Position your starting combat squad at the main ramp or entrance leading directly to your base. Build a defensive turret nearby so automated fire handles early scout units.
• Preserve starting units: Squad casualties incur ether replacement costs. When a squad member takes heavy damage, pull the unit back behind your turret fire or into your hero's presence before it dies.
• Upgrade the starting collector: Once your entrance defense stabilizes, upgrade your baseline ether collector. A consistent ether income allows you to adapt to stronger enemy wave compositions without running into resource deficits.

Pushing outward before your main entrance is secure forces multi-front combat. Confirm that your automated defenses handle minor incursions independently before sending your main force forward.

Hero Positioning and Ability Timing

Your hero functions as the mission's mobile frontline anchor, equipped with a larger health pool than standard infantry.

• Absorb focus fire: Keep your hero positioned slightly in front of standard squads so heavy incoming abilities and single-target attacks target the hero instead of fragile units.
• Disrupt swarms and armor: Save active hero damage and crowd-control skills for dense enemy clusters or heavily armored units rather than wasting them on isolated scouts.
• Kite to recover health: If your hero's health drops dangerously low, retreat into the attack radius of your defensive turrets. Kiting away from active fire gives your hero time to regenerate health safely.

Securing Secondary Ether Nodes

Completing the mission requires more ether and squad capacity than your starting base produces. Expand outward to auxiliary nodes to support late-game forces.

Never leave an active expansion node unattended. Roaming enemy patrols frequently target newly claimed resource points, requiring a stationary turret or guard squad to maintain uninterrupted resource generation.

Squad Compositions and Role Swaps

Enemy assault waves escalate in armor and combat strength as the mission advances. Use the unit role-swap mechanic in Iron Marines+ to reconfigure existing squads rather than spending ether to replace them:

1. Frontline shields: Deploy heavy melee or tank units to soak direct hits and keep enemy formations off your damage dealers.
2. Backline armor-piercing: Station sniper or anti-armor specialists directly behind your frontline to eliminate high-threat targets at range.
3. Wave adaptations: Swap squads into area-of-effect weapons when facing large swarm waves, then transition into high single-target damage when massive individual targets appear.

Weathering the Final Assault

When the final attack alarms sound, pull all forward-deployed offensive squads back toward your fortified choke points. Fighting in open areas exposes your units to encirclement.

Allow the vanguard of the final wave to hit your fortified choke point, then activate your hero's crowd-control and burst skills in tandem with concentrated turret fire. Once the main assault wave is broken, advance your surviving squads and hero together to clear any remaining hostile nests and complete the mission.