Here is the full list of all 20 moto RKD dash achievements.
Finish levels 1 and 2!
Finish levels 3 and 4!
Crash 3 times and finish!
Crash 10 times in one level!
Finish levels 5 and 6!
Finish levels 7 and 8!
Finish the championship!
Race beyond time and space!
Lose all continues!
Watch the kaleidoscope for 3 minutes (clear pause).
Complete 3 perfect runs!
Complete 6 perfect runs!
Complete all perfect runs!
Keep the bond for 20 seconds!
In Champ81 reach the score of 300!
In Champ81 reach the score of 999!
Finish the game without using continues!
Leave the game on for 10 minutes!
Beat the game three times in a row!
Get all achievements!