Here is the full list of all 10 DownStream: VR Whitewater Kayaking achievements.
Finish a course without taking damage
Use Grappling Hook 50 times
Use Armour 50 times
Complete All Desert Courses
Complete All Arctic Courses
Travel 50Km
Complete All Rocky Mountain Courses
Achieve a gold medal on any course
Travel 5Km using the Windsail
Finish a course on the first attempt without using a checkpoint