Sovngarde (Quest)

Introduction
When entering Sovngarde, walk down the stairs, and there will be a Stormcloak soldier. He'll say that he can't reach the Hall of Valor due to the deadly mist. In this mist, Alduin hunts for lost souls to gain power. After the conversation, follow the path through the mist. If you chose to help the Stormcloak, he will be devoured. Note: You can clear the mist using the Clear Skies shout.

Note: the soldier does not always start in the beginning, and there is a good chance the soldier will not be encountered until part way through the mist. Do not worry, the mist will not engulf you as you speak with the soldier.

If you have killed Ulfric, his soul will be here, saying "we can't get anything done in this fog" and will tell you to turn back. Also, Galmar Stone-Fist can be found saying "Dragonborn, even in death you dog my steps?" "How come you're here? The king of this realm will cast you out - cursed be your name by all sons of Skyrim, with scorn unceasing."

Conversely, if you followed the Stormcloak quest, Rikke will be here if you killed her.

Also, If you have finished the Companions quests, Kodlak Whitemane will be wandering in the fog. Occasionally, you will also meet Ysgramor in the Hall of Valor.

If you've completed the Bards' College quest Tending the Flames you can see Svaknir, who wrote the verse you retrieved, along your path.

Hall of Valor


When you reach the end of the path you will see a giant building on the other side of a whale bone bridge. This is the Hall of Valor. In front of the bridge stands a guard, Tsun. He will test you if you're strong enough to enter the Hall of Valor.

Tsun: What brings you, wayfarer grim, to wander here, in Sovngarde, souls-end, Shor's gift to honored dead?" Who are you?
 * Who are you?
 * I pursue Alduin, the World Eater
 * I seek entrance to the Hall of Valor

I am Tsun, shield-thane to Shor. The Whalebone Bridge he bade me guard and winnow all those souls whose heroic end sent them here, to Shor's lofty hall where welcome, well earned, awaits those I judge fit to join that fellowship of honor.

I pursue Alduin, the World Eater

A fateful errand. No few have chafed to face the Worm since first he set his soul-snare here at Sovngarde's threshold. But Shor restrained our wrathful onslaught - perhaps, deep counselled, your doom he foresaw.

He can be quite hard for low-leveled players. If you are unable to defeat him, simply jump on the rock where he can't reach you and hit him with arrows or spells. If you plan on using melee weapons, move to the water source and stay in the water. Tsun is afraid of the water for some reason, so you can easily beat him by attacking him from the water. When his health reaches about 60%, he will yield and allow you to cross the bridge to the Hall of Valor. If you try to skip the test, you will die when you walk on the bridge - even if you have god mode on with console commands. One method for defeating Tsun is to simply use Storm Call and run away, avoiding his swings and letting the lightning bolts whittle away at his health.

Heroes of Sovngarde
When you enter the Hall of Valor you will be met by Ysgramor himself, and told to speak to Gormlaith Golden-Hilt, Hakon One-Eye and Felldir the Old - the three heroes who defeated Alduin in the past. They'll be a bit further down the hall. Talk to them and they'll help you defeat Alduin.

If you wander around the hall you complete the Sovngarde quest automatically and start Dragonslayer quest. The three heroes still help you.

Bugs
​setstage MQ304 150 This will make Tsun "acknowledge" you and allow you to pass into the Hall of Valor.
 * Tsun might be 'invincible' at some versions of the game, e.g. He'll be bending down on the verge of death with a few strikes but does not yield.
 * Solution: use the following console command:
 * 2012-01-16 00011.jpg The mist may either disappear entirely or appear as a very patchy and crude-looking mask over the player's view, ruining the effect. (Observed on a system with an Nvidia GeForce GTX 560 Ti immediately after the upgrade to driver version 285.62 and confirmed still not working on beta driver version 295.51, February 20, 2012.)
 * As you run along the path with all of the mist, it is possible that the mist will disappear as you run.
 * Sometimes if you run past Tsun onto the bridge without defeating him it will state in your quest log that you have defeated him and he will stop attacking you.

Совнгард (Квест)