overwhelming the base and can destroy bases using them exclusively.

Group offensive units and head southeast to destroy a small elf outpost.

Assign one acolyte to haunt a gold mine and another to build a necropolis on the north side of your base, beneath the forest opening leading to the river. This is the optimal spot for building spirit towers for air unit defense.

Once the gold mine is complete, assign all acolytes to it. After the necropolis finishes, order ghouls to harvest lumber nearby and upgrade the necropolis to a Halls of the Dead immediately.

Build two ziggurats and a graveyard near the forest by the gold mine. Place the ziggurats on either side of the necropolis.

Construct spirit towers (ziggurats) on the left and top sides of the necropolis; about two rows of 3 on the left and 3-4 along the top, keeping the necropolis centered behind them.

Keep ghouls on lumber and activate necromancer auto-casting. Use crypt fiends, Arthas, and necromancers to fend off the first minor attack.

After the first attack, upgrade ziggurats if the graveyard is done; if not, do so as soon as possible.

Once the Halls of the Dead completes, train two more acolytes. Assign 5 to gold and 1 to building/repair.

Send ghouls to harvest lumber near the graveyard once the initial forest is cleared. Commit all resources to defense until you have about 10 spirit towers.

Use only Arthas to assist in defense, saving necromancers and crypt fiends.

Build a Temple of the Damned, a Crypt, and a Slaughterhouse, placing them where ghouls have cleared forest if space is limited.

Queue all upgrades from the graveyard. When the Temple of the Damned completes, get necromancer upgrades.

Defend against routine attacks from Sylvanus (ground) and air units from the north.

When Arthas levels up, get the last rank of Death Coil. Continue upgrading and defending.

Once all upgrades are complete, move Arthas to the right exit to find four zeppelins. Repair spirit towers on the north side of your Halls of the Dead as air units can damage them.

Build your attack force: 11 crypt fiends, 11 necromancers, and 6 meat wagons. This will push you into high upkeep.

Harvest the entire gold mine before crossing into over 70 food. To save gold, you can save up needed gold while in no upkeep. Purchasing all units costs 6240 gold. Wait until the mine has about 3000 gold left before crossing into upkeep, as affording the attack force leaves little leeway when the mine collapses.

If you have doubts, harvest the entire mine before building your force beyond 40 food. Keep ziggurats repaired as you cannot afford to lose them. Use Arthas's Death Coil on enemy units, especially air and Sylvanus, to speed up their demise.

Train meat wagons first to start gathering corpses. If short on gold, leave meat wagons out but keep at least three. Alternate training crypt fiends and necromancers.

After defending attacks, roll meat wagons over for corpses.

Once the gold mine collapses, spend the remainder of your gold, saving at least 300, to finish your attack force. Do not spend more than a few minutes on this to avoid spending gold on repairs or new towers without income.

Hotkey your groups: 1 with Arthas and crypt fiends, 2 with necromancers and Arthas, and 3 with meat wagons.

Load into the zeppelins. If you have the entire attack force, you will be a space or two short; grab when you return for your acolytes. Save your game.

Head out the right side of your base, across the river, and drop your entire force on the runes. Shift-command your zeppelins back across the river, ensuring all units are unloaded.

Order necromancers to summon skeletal warriors. Order the skeletal warriors and crypt fiend groups to attack. Retreat necromancers and meat wagons slightly to keep them out of trouble. Turn off auto-casting once the area is cleared.