The door opens without issue. 

The heavy stone walls of this room dampen the cold and the howling wind outside. An inscription in what looks like Draconic runes is carved into the east wall.

There are two doors, one leading to the north, and one leading to the south.

Ulysse, although you can read draconic, this inscription is in an archaic version of draconic, so it’ll take you a few minutes to translate. At first glance it translates to this:

“Wilcumian oð Salsvault! Visitors, lystan im of and of thing or in bîdan hêr heonu cyning lâd−rinc?, by reason of âðrôwian ne tillan edwihteun−âlýfed PERMISSION.” 

Also—here’s a map of Salsvault: https://media.dndbeyond.com/compendium-images/egtw/yDOyqyOocErRgYJK/5.10-salsvault-player.png

What would you like to do?

Jahn would shut the door and get used to the calm for the first time in days after being in the windy tundra.  They'd approach the north door and try to hear if anything is on the other side.

Perception: 7

Ulysse will study the inscription some more to see if he can decipher any more with time. Holding his flame to read. "I'm not ssure what thiss ssayss but I think I iss telling uss not to enter without permission. I think there iss a riddle to sslove but I can't make it out." 

Quote from Stivali >>

Jahn would shut the door and get used to the calm for the first time in days after being in the windy tundra.  They'd approach the north door and try to hear if anything is on the other side.

 

Perception: 7

 You don’t hear anything. 

Quote from Engineered_Beard >>

Ulysse will study the inscription some more to see if he can decipher any more with time. Holding his flame to read. "I'm not ssure what thiss ssayss but I think I iss telling uss not to enter without permission. I think there iss a riddle to sslove but I can't make it out." 

 After studying it for a couple minutes, you can now read it as:

“Welcome to Salsvault! visiteth'rs, prithee waiteth h're f'r an esc'rt, and DOTH NOT TOUCHETH AUGHT WITHOUT PERMISSION.”

"Best I get is a warning not to touch anything inside."

Doter pulls at a nonexistent beard, "We've a warning about some kind of monsters, we've been attacked by ice golems, and now we're not to touch anything without permission." 

Another moment later, he muses, "Doesn't leave much to go on..." before lifting a hand with a shrug. 

He calls out, not too loud but loud enough to cause an echo if the area permits, "HELLO? IF ANYONE IS THERE, WE'RE HERE TO SEE ABOUT CURING SOME AWFUL FREEZING DISEASE!" 

You hear the sound of metal clanging to the south, then a door opening, then after a few seconds, an empty, animated suit of full plate armour bursts in through the south door of the entrance chamber, closely followed by another. 

Roll initiative. 

Initiative: 8

"Oh boy..."  Jahn would mutter as they ready themselves to fight. 

Int: 8 (14 Dex)

Ulysse initiative 14

Int:20

Initiative order:

1. Erzer (23)

2. Boil (20)

3. Ulysse (14)

4. Doter & Jahn (8) (You guys decide who goes first)

5. Animated Armour x2 (5)

Erzer cast magic missile on Animated Armour A. 

Damage: 13 force

Boil, your turn. 

“MONKEY!! GUIDE ME BOLT!!!

Boil casts guiding bolt, 20 to hit, dealing 15dmg to AA A

Ulysse sees the floating armor coming into veiw and gets ready to throw his flame at the it but then sees the second come out. Remind me to thank Doter after this. He moves the flame in front of his face and starts to blow on it. As the flames move with the new breeze the flames start to drift towards the suites of armor and roughly 10 ft away from the 2 (trying to be 10 feet from both and away from us), the flames start getting larger and start resembling a floating snake. The snake hisses as a poof of flames spread out from it. (Each creature within 10' of the spirit make a dex ST DC 13 or take 4 fire damage.) The snake, while floating makes a slithering movement back toward the group and spits a little flame at AA A. To hit 13 (with advantage) Damage 4 fire. (Ulysse action to summon wildspirit, BA to command to to act.)

Animated Armour A takes an opportunity attack against the Wildfire Spirit.

To hit: 11

Doter and Jahn, your turn.