Here is the full list of all 36 Snowtopia: Ski Resort Builder achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
You validated all steps of the tutorial
You welcomed your first skier
You built your first decoration
You built a slope of 1,500m or longer
You built a slope of 3,000m or longer
You built a station that welcomed 300 or more skiers
You built a station that welcomed 1,500 or more skiers
A skier profile left you a 100% average satisfaction rating
A skier of each profile left your station completely satisfied (100%) during one game
Your snowgroomers have handled 100 slopes in total
Your mechanics have handled 100 lifts in total
Your ski patrols have handled 100 falls in total
You have 20 injured skiers waiting for help at the same time
Your resort reached 45 days old
Your resort reached 100 days old
You researched all technological improvements during one game
You built all types of ski lift during one game
You built all types of service building during one game
You built one of each prop during one game
You reached reputation level 1 in at least one of your resorts
You reached reputation level 2 in at least one of your resorts
You reached reputation level 3 in at least one of your resorts
You reached reputation level 3 in each of the available resorts
You built 10 raclette stands in one game
A ski lift is stuck due to a serious incident. Anyone still hanging on should probably just let it go.
You built 10,000m of green runs in total
You built 10,000m of blue runs in total
You built 10,000m of red runs in total
You built 10,000m of black runs in total
Your raclette stands fed 150 people during one game
Your helmet shops equipped 150 people during one game
Your drink houses served 150 people during one game
You built 50 decorations in total
You built 150 decorations in total
You welcomed 10,000 skiers in your resorts in total
You welcomed 50,000 skiers in your resorts in total