Here is the full list of all 19 Clustertruck achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Beat the medieval world!
Aced 10 levels!
Beat the lazer world!
Beat the winter world!
Beat the forest world!
Beat the desert world
Happy Holidays!
Get 10 000 points in one level!
Beat the game!
Beat a ghost!
Unlock all abilities!
Get the best time out of your friends on a level!
10 seconds of air time!
Beat the ancient world!
Beat the Sci-Fi world!
Beat the steampunk world!
Complete the game without using abilities!
Beat the hell world!