Kingdom Rush Vengeance TD+: Excavation Gateway Iron Guide

To beat the Excavation Gateway Iron Challenge on Impossible difficulty in Kingdom Rush Vengeance TD+, concentrate your primary defenses at the central junction where the two cavern paths merge. The Iron Challenge gives you only one life point, meaning a single leaked enemy causes an immediate defeat. Surviving the single-wave dwarven assault requires establishing physical blockers at the choke point, shredding high-armor units with magic damage, and using your hero and reinforcements to intercept sprinters and ranged gunners.

Defense Setup at the Central Choke Point

Because Excavation Gateway sends enemies down two separate winding paths before they converge into a single exit lane, building defenses near the individual spawns splits your gold too thinly. Focus your starting gold on towers that overlook the central convergence zone.

Invest your starting funds into two or three high-impact towers directly covering the intersection before starting the stage. Ensure your frontline blocker is supported immediately by armor-piercing magic damage so durable targets cannot grind down your stalling units unchecked.

Dwarven Enemy Counters

The assault wave combines high physical armor, durable constructs, and ranged fire. Counter each threat category based on its specific combat behavior:

• Armored Dwarven Vanguard: Standard physical attacks deal minimal damage against their heavy armor. Anchor them at the intersection with your blockers while magic towers focus them down.
• Stone Golems and Mechanical Units: These enemies possess massive health pools and heavy hits that quickly wipe out stalling units. Stagger your blocking lines so golems waste time fighting disposable units rather than marching forward. Direct your hero's active damage skills and single-target magic towers at them as soon as they reach the choke point.
• Dwarven Gunners and Mortars: Ranged units attack your blockers from outside basic melee engagement. Drop summoned reinforcements directly onto ranged clusters or engage them with your hero to disrupt their firing lines before they dismantle your front line.
• Fast Sprinters (Quarriers): Light runners attempt to slip through while your primary towers are locked onto heavy targets. Maintain a rear cleanup tower or place emergency reinforcements behind your main blocker to catch any unit that breaks past the primary line.

Hero Micro and Skill Usage

Your hero must operate as an active frontline anchor rather than remaining stationary:

1. Engage incoming waves early: Position your hero slightly upstream from the main tower cluster to thin out light units and delay heavy targets before they engage your garrison units.
2. Rotate out to recover: When tanking hits from golems or dense groups, monitor your hero's health bar. Pull your hero behind your tower blockers before health drops to critical levels, allowing passive health regeneration to restore them safely.
3. Target ability bursts on dense packs: Save active hero crowd-control and burst abilities for large enemy clumps at the choke point rather than using them on isolated targets.
4. Deploy reinforcements behind the frontline: Avoid dropping basic reinforcements directly into heavy cleave damage. Place them just behind your main tanking line to act as a safety net for fast units slipping past the primary engagement. Reserve global damage spells, such as Soul Impact, for dense clumps or high-health threats that threaten to overwhelm your choke point.