Tundra

The Tundra is the domain of the Stormbringer clan.

Taking the Moongates
Upon arriving in the snow mountains, Grommel and Faine meet and speak, Faine promising aggression for trespassing and Grommel promising aggression in return if his clansmen are attacked. Indeed, the Stormbringers do attack them, forcing Grommel's forces to crush theirs. They do this by taking and using the Moongates.

Deeper into Enemy Territory
After crushing the initial forces of the Stormbringer, the Stonekrusher and Hellfire clans move deeper into enemy territory. Again, by stealing moongates and soul fountains, they choke the Stormbringers into submission.

Finding the Stronghold
This time summon Lightning Elementals to their aid and using the last of their moongates and nearly the last of their units, the Stormbringer try again to stave off Grommel's attack. They fail to protect the gate to Faine's stronghold.

Last Stand of Stormbringers
Grommel gives Faine one last chance to take his remaining kinsmen and run away. However, being prideful, Faine would rather stay and fight to the last. He uses Lightning Towers to strike out at the joint clans without wasting the lives of his men, by Grommel's forces find and capture this tower for their own. They then use the tower to attacking behind Faine's stronghold, destroying the obelisks that keep magical barriers erect. Once those fall, their forces flood and take the stronghold.

Grommel himself faces off with and kills Faine.

Trivia

 * Moongates are first encountered in the Tundras.
 * Scouting Towers are only found in the Tundras.