Here is the full list of all 27 Ragdoll Runners achievements.
Land in the sand pit during a Triple Jump
Hit the takeoff board perfectly in a jump event
Run at 25 km/h for 4 seconds
Make a 6 meters step while running
Jump higher than 2 meters
Run at 20 km/h for 4 seconds
Landing on the bottom in a jump event
Run backwards over 3 meters
Fall heavily on the head
Run at 10 km/h for 4 seconds
Run at 15 km/h for 4 seconds
Run at 5 km/h for 5 seconds
Run at 30 km/h for 4 seconds
Run at 35 km/h for 3 seconds
Run at 40 km/h for 3 seconds
Reach 45 km/h
Run a whole race on one leg
Win the highest medal on 100 Metres
Win the highest medal on 10 Metres
Win the highest medal on 30 Metres
Win the highest medal on 60 Metres
Win the highest medal on the Long Jump
Win the highest medal on Triple Jump
Win all the highest medals
Win the highest medal on 110M Hurdles
Finish a 110M Hurdles leaving all hurdles standing
Win the highest medal on 60M Hurdles