Warcraft 3: Reign of Chaos (Hard) - Undead Campaign - Chapter 08: Under the Burning Sky

The final level in the Undead Campaign, and it's time to summon Archimonde.
Thankfully this level isn't long by last level standards, but it doesn't make it any easier.
If you're good at defending, you'll be fine here.

You'll want to claim the SE Mine ASAP so that you can have a decent income.

Spirit Towers are your main defense for this level, and nothing else outside a few Necropolis will provide a nice block. For the most part Arthas and the reinforcement units will be the only thing you need for taking out siege Engines/Mortar Teams. Revive will come in handy when you can get a few Knights to aid in this as well.

You'll want at least one Acolyte at each of the three main points, and preferably two. I started on the west and used the initial units to guard the East and North entrance until I could get out enough Spirit Towers to start guarding the other sides as well. The Hero should also be a priority, but I found them to be mostly concentrated on my units. A Blizzard could have been costly.

When the timer expires, you win, and Archimonde is summoned. He leaves Tichondrius and the Dreadlords in charge of the Scourge, now that the Lich King is no longer needed, and he begins preparations for the Invasion of this planet.

So what will become of Arthas? We'll see him again.