Here is the full list of all 17 Lost Marbles achievements.
Complete Chapter 1 in Hardcore mode
Beat all level par times in Chapter 2
Die 30 times with each marble
Play the game on a Tuesday
Beat all level par times in Chapter 1
Complete the first 30 levels at least once
Travel 10 miles with each marble
Okay so it’s not actually rubber but it still floats
Beat all levels in Chapters 1-3 with a cumulative time of 30 Minutes or less
Your 3 favorite levels are also our favorites (and you played them for at least 10 minutes). Congrats on being awesome!
Complete Chapter 2 in Hardcore mode
Complete Chapter 3 in Hardcore mode
Where was the Rubber Marble when you needed him?
Unlock all the Marble Skins from the first 3 chapters
Beat all level par times in Chapter 3
Complete Chapter 4 in Hardcore mode
Beat all level par times in Chapter 4