To revive Kel’Thuzad, you need the power of the Elves.
You will face the northern enemy in the lands of Quel’Thalas.
Don’t forget to upgrade your troops by buying technology in the Graveyard.
Only then start building the army.
Meat Wagons will be essential to destroy trees and further expansion.
This mission will give you access to the first support unit - Necromancer.
His basic skill is the Summon Skeletons spell which creates skeletons from the corpses of fallen units.
They bodies must be the remains of organic and ground units.
The summoned units, mechanical units and heroes do not leave any bodies if they are killed.
After the expansion of the base and building an army, it’s time to start the attack.
It’s worth leaving a small garrison, but focus on destroying the base.
Use catapults to destroy towers and production buildings.
Also, use Ghouls and Necromancers get rid of their defenders.
Remember that Meat Wagons can collect and carry the bodies of fallen units, which will provide new skeletons.
Another important point on your route is the Fountain of Mana in the left-bottom corner of the map.
This place is guarded by Golems, which are not a challenge for a full squad of Undead troops.
Use this object to replenish mana of Arthas and Necromancers.
Before you enter the main base(7),start bombarding the towers from a distance.
Now start using the bodies of fallen Ghouls and Elves to summon Skeletons.
Use Unholy Frenzy on your units to accelerate your attack speed.
It is worth getting rid of Priests first, who can heal enemy soldiers.

Stay in the center of the base and destroy the production buildings and the enemy’s main building.
Kill the workers to prevent reconstruction of the base.
After destroying all important enemy targets, the mission will be successful.
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