Iron Marines+ Metal Gear Veteran Special Operation Guide

To beat the Metal Gear Special Operation on Veteran difficulty in Iron Marines+, establish a fortified chokepoint defense using armored frontline blockers and long-range Snipers, then manually focus down heavy walkers before they break your perimeter.

Veterans waves mix swarms of light infantry with heavily armored bipedal mechs. Surviving without spending consumable power-ups requires holding tight lanes, switching unit roles dynamically, and saving hero burst abilities for elite mechanical targets.

Hero Selection and Positioning

Pick a hero capable of high burst damage or heavy battlefield control, such as Taggins or Kara, to crack armored mechs quickly.

• Anchor the main choke: Station your hero slightly ahead of your infantry line at the central access lane. This keeps incoming fire focused on a durable target while your backline deals damage safely.
• Conserve tactical cooldowns: Do not waste hero abilities on basic trash infantry. Let your basic squads handle early skirmishers with standard auto-attacks, and save active skills to burst down heavy mechs or stun dense clusters.

Squad Composition and Unit Swapping

A rigid squad build will fail against the alternating waves of swarms and armor. Use the base station to swap unit roles to counter the composition of the next incoming assault.

When incoming waves feature heavy bipedal mechs, swap excess standard troopers into Snipers immediately. Return to balanced crowd-clearing infantry when fast swarms threaten to overrun your firing line.

Chokepoint Defense and Target Priority

Metal Gear's map layout punishes spreading units across open terrain. Form a consolidated kill zone where incoming paths converge.

1. Funnel the assault: Keep all defensive units concentrated at the primary ramp or bottleneck. Spreading squads thin allows mechanical drop squads to isolate and wipe out individual units.
2. Build complementary turrets: If the route has static defense sockets, build a slow-firing heavy cannon tower behind your front blockers to smash heavy plating, or a rapid-fire turret to clear escort drones so your main line stays focused on heavy threats.
3. Manually focus heavy walkers: Iron Marines+ units automatically engage the nearest target by default. Click directly on incoming walkers to force your Snipers, turrets, and hero to focus burst damage on priority targets rather than wasting DPS on low-tier escort units.

Countering Heavy Walkers

The primary failure point on Veteran difficulty is walker area-of-effect damage tearing through unshielded light squads.

• Dodge windup attacks: When an enemy mech telegraphs an area-of-effect ground slam or missile barrage, pull your frontline melee squads back one step to avoid the blast, then re-engage.
• Chain defensive skills: Activate hero shields or crowd-control stuns the moment an armored walker enters firing range. Stagger these skills so your frontline never takes unmitigated hits.
• Clear escorts first: When mechs push alongside swarms, wipe out the swarming crawlers immediately using explosive ordinance or hero area abilities, leaving the mech vulnerable to focused single-target fire.

Managing Resources on the Final Wave

The final wave unleashes multiple heavy mechs accompanied by artillery support.

• Space your backline: Clumping units together makes them vulnerable to mortar barrages and walker rockets. Spread your Snipers along the back perimeter so one blast cannot wipe out all your ranged damage.
• Bank your Ether: Avoid immediately replacing single lost units during the lull before the finale. Save enough Ether to instantly rebuild high-tier Brawlers or Snipers if the frontline collapses under the final push.
• Fall back if breached: If enemy mechs break your frontline, kite backward toward your core objective with your hero while training replacement squads at the base station to re-establish the block before walkers reach the node.