Here is the full list of all 7 Uphill Skiing achievements.
Acquire a taste for pine needles
Make friends with 50 bears
Ascend 500 kilometers of snowy hillside
Create 50 squirrel pelts
When I was young, we did not need powerups for Hard Mode
Eat a total of 10 bags of candy or buns in one run
Eat and drink a total of 10 sausages and bottles of booze in one run