Full Undead is one of the strongest comps in the game right now. It wins by cutting your team’s HP at the start of battle and then finishing you with splash damage from Baby Dragon and Wizard.

If you don’t prepare properly, it feels impossible to beat.

But it does have weaknesses.

This guide explains exactly how to counter Full Undead, what comps to run, how to position, and what mistakes to avoid.

How to Counter Full Undead Build in Merge Tactics

Before learning how to counter it, you need to understand why it works.

Full Undead:

• Reduces your team’s HP at the start of battle
• Uses splash damage (Baby Dragon + Wizard)
• Slows you with Hinder
• Scales extremely well at 3-star upgrades

So the counter must either:

• Ignore the HP reduction
• Outheal it
• Kill their backline fast
• Or outburst them before they stabilize

Hard Counter #1: Full Tank (Best Direct Counter)

This is the only true hard counter because it directly negates the Undead HP curse.

Undead reduces HP at the start.

Tank synergy heals massive amounts during combat.

That healing cancels the HP loss and turns the fight into a sustain battle — which tanks win.

Tank Counter Build

Frontline

• Knight
• Valkyrie
• Giant Skeleton
• Monk

Backline Support

• Baby Dragon
• Wizard

Your goal is simple:

Let Undead trigger first.
Then let your tanks heal everything back.

Monk is extremely important because he provides massive sustain and defensive power. A high-star Monk makes a huge difference.

Positioning vs Undead

• Place Monk slightly behind frontline so he isn’t instantly focused.
• Spread tanks just enough to avoid splash stacking.
• Protect Baby Dragon at all costs.
• Don’t stack everything in one tight clump — Undead builds rely on splash.

If positioned correctly, Tank beats Undead in equal star matchups.

Counter #2: Assassin Pressure (Backline Killer)

If you can’t build Tank, assassins are your next best option.

Unit

• Golden Knight
• Goblin

Assassins jump directly to the enemy backline.

Undead relies heavily on:

• Skeleton Dragon
• Baby Dragon
• Wizard

If those die early, Undead collapses.

Golden Knight gets attack speed after each kill.
If he kills one backliner, he snowballs instantly.

Target Skeleton Dragons first. They are the real damage engine of Undead.

Positioning for Assassins

• Place Golden Knight opposite Skeleton Dragon.
• Avoid placing him where Giant Skeleton explosion hits instantly.
• Protect your own backline from splash while he dives.

Assassin builds require smart positioning to work.

Counter #3: Full Marksman Burst

Marksman builds can sometimes beat Undead by deleting key units before Undead stabilizes.

• High burst damage
• Long range
• Fast kill potential

If you eliminate Skeleton Dragon quickly, Undead damage drops massively.

This is less consistent than Tank but works in burst-heavy games.

Star-Level Matters

Against Undead:

• A 3-star Monk is huge.
• A 3-star Golden Knight can win fights alone.
• A 3-star Baby Dragon on either side often decides the match.

Even counters lose if you are down multiple star levels.