Here is the full list of all 40 When Ski Lifts Go Wrong achievements.
You have collected all the medals in The Rookie Mountains!
Cross the finish line backwards
You have completed all the levels in The Rookie Mountains
Cross the finish line upside down
Cross the finish line dead
You have caused the unfortunate demise of 5 innocent riders!
You have got 5 riders over the finish line safely!
You have caused the unfortunate demise of 50 innocent riders!
You have caused the unfortunate demise of 500 innocent riders!
You have caused the unfortunate demise of 100 innocent riders!
You have caused the unfortunate demise of 1,000 innocent riders!
You have got 50 riders over the finish line safely!
You have got 100 riders over the finish line safely!
You have got 500 riders over the finish line safely!
You have got 1,000 riders over the finish line safely!
Backflip a rider
Frontflip a rider
Backflip a rider whilst on a lift
Frontflip a rider whilst on a lift
Airborne for 25m
Airborne for 50m
Airborne for 100m
Jump over the finish flags
Complete 2 laps of the same lift with the same rider!
Complete 3 laps of the same lift with the same rider!
Airborne for 75m
You have completed all the levels in The Elps
You have collected all the medals in The Elps!
You have completed all the levels in Summer Glade
You have collected all the medals in Summer Glade!
You have completed all the levels in Turbo Canyon
You have collected all the medals in Turbo Canyon!
You have completed all the levels in Green Gorge
You have collected all the medals in Green Gorge!
You have completed all the levels in Sunshine Peak
You have collected all the medals in Sunshine Peak!
You have completed all the levels in Whistle Ridge
You have collected all the medals in Whistle Ridge!
You have completed all the levels in Mad Mountain
You have collected all the medals in Mad Mountain!