Here is the full list of all 15 ROBUST ROAD ROLLER achievements.
Clear Stage 1-4
Clear Stage 2-4
Clear Stage 3-4
Clear Stage 4-4
Clear Stage 5-4
Clear Stage 6-4
Clear Stage 7-4
Clear Stage 8-4
Clear Stage 9-4
Clear Stage 10-4
Acquire all of the stage star
Acquire all of the mission star
Level land
Level land a lot
Level land a lot more