Here is the full list of all 12 Alpine - there are The Simulation Game achievements.
Complete the first task in Oberbruck.
Groom your first slope
Ride your skis for the first time
Complete 3 side missions
Drive a snow groomer for the first time
Shovel away the snow piles in Oberbruck
Deliver a package to a restaurant
Complete the first event
Conquer slope 8 on skis
Complete an evening mission
Unlock all sectors
Unlock the Granithangbahn aerial tramway