The Denmark - The Vikings Add-on for Sid Meier's Civilization V has 11 achievements.
Win as Normandy (any difficulty)
Build a motte and bailey improvement
Win scenario on Deity (any civ)
Win scenario on Immortal (any civ)
Win scenario on Emperor (any civ)
Win as Denmark (any difficulty)
Win as Norway (any difficulty)
Win as Anglo-Saxon England (any difficulty)
Pillage 9 Farms on the same turn
Beat the game on any difficulty setting as Harald Bluetooth
Enter a snow tile with the Norwegian ski infantry