Warcraft III: Reign of Chaos/Digging up the Dead

Mission Objectives
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 * Main Quest - Recover Remains
 * Kill the Paladin
 * Bring Arthas to Kel'thuzad's tomb
 * Arthas must Survive

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 * Establish A Base
 * Build a Necropolis
 * Haunt a Gold Mine
 * Build a Crypt
 * Build 3 Ziggurats
 * Build a Graveyard

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 * Claim The Urn
 * Kill the Paladins
 * Recover the Urn

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Starting Units
When this mission starts you will start with 5 Ghouls, 3 Meat Wagons and, of course, Arthas. Since Arthas must survive for the duration of the mission, you'll never want to send him without escort.

The Paladin and Kel'Thuzad's tomb
Move to the left of your screen until you see an orange scout tower. You can use your Meat Wagons to destroy the tower easily when used in combination with the rest of your units or just by themselves. Not much farther down the path are two footmen that you can overwhelm easily with your small force. Further down the path is a level two Paladin that will retreat to the left of your screen when you approach him. You can use your Meat Wagons to destroy the guard tower without having to take damage. You can destroy the rest of the buildings if you wish, but it is not necessary as they do no damage and yield no items.

Move toward the left of your screen slowly and you will meet four footmen and some buildings. The Barracks farther in the base will remain inactive. The Paladin and footman near the back of the orange base will attack you when you start attacking the Barracks, and when you kill the Paladin he drops a scroll of healing. It's okay to lose a couple of Ghouls at this point, as you will be getting your base started once you complete this quest. Once you defeat the Paladin and footman and you destroy the base, head toward the left of your screen and you will see a graveyard with a circle of power. Send Arthas to the circle and this will trigger a cutscene.

The Preparations Part 1
After your cutscene, you will have five acolytes at your disposal. Send one to haunt the gold mine and leave the others where they are until haunting the gold mine is finished. You will also be given an additional two Ghouls making seven if none of them died fighting the first Paladin. While building your base, build your ziggurats near the edges of your base. They provide food and can be upgraded to defense towers, so while you're off leveling Arthas later on, your base has some extra defenses. While you are off leveling Arthas, upgrade your Ghouls' offensive and defensive abilities by researching Creature Attack and Creature Carapace from the graveyard.

If you wish, you can head to the bottom of your screen and fight a Rock Golem while you are waiting for your base to finish. Regardless of when you fight him, make sure you have Arthas with you as well as seven Ghouls, or you may have a hard time beating him. Head towards the bottom of your screen and you well see a second Rock Golem. When fighting your second Golem, be careful not to have any of your units go to far to the right until everyone has healed and you have some back up, because there is a level nine Granite Golem over there. When the Granite Golem is beaten, it drops a pendant of Mana which gives Arthas an extra 150 Mana points and will also probably level him up to level three.

The Preparations Part 2
Once you've beaten the Golems, head to the left of your screen and you will enter a town. Follow the path down to find a Sasquatch hidden in the trees. One of the boxes to the right of the Sasquatch yields a healing potion. Head back up the path and head to the right back to your base. Head toward the top of your screen and you will see a path leading north. Follow it and you will find three Renegade Wizards. They are carrying no items, but will give you some experience if you aren't at level three. Head back to your base and make preparations for fighting the Paladins. Before fighting the first of your three Paladins, train as many Ghouls as you can and, if you haven't already, upgrade your offense and defense for your Ghouls and Meat Wagons.

The three Paladins
For the first Paladin, you should only need two full groups of units, including Arthas, made of ghouls. Make sure you heal your Ghouls whenever they need it with Arthas' Death Coil. After killing the first Paladin, he will drop a Potion Of Greater Healing. Move to the left of your screen and destroy the rest of the turquoise buildings with your Meat Wagons.

The next Paladin you have to face will be a level five so just send all of your units in to attack and you should be able to overwhelm his small force.

After destroying the rest of the dark blue buildings, regroup and train any reinforcements you will need. Have as many Ghouls as possible for the next Paladin, the level 10 Uther. This will be a difficult fight, but with three full groups of Ghouls it shouldn't last long; even with Uther using Divine Shield, he will not last long once it has expired. Once he is defeated, collect the Urn from his body and you will trigger a cutscene and the end of this mission.