Here is the full list of all 15 Snow Scout achievements.
Completed the 1st day with the Snow Scouts.
Completed the 2nd day.
Completed the 3rd day.
Completed the 4th day.
Completed the 5th day.
Completed the 6th day.
Completed the 7th day.
Finished the game after opening & testing all ski routes.
Finished the game after finding & recycling all trash.
It seems that Vreni really likes you!
You finished your assignment with the Snow Scouts.
You were a good Snow Scout.
You were a very good Snow Scout.
You really were the best Snow Scout ever. Congratulations!
Finished the game after finding & photographing all birds.