Here is the full list of all 32 Crumble achievements.
Collect your first blob
Jump 100 times
Fall through the fog for the first time
Finish the 1st world
Finish the 2nd world
Finish the 3rd world
Finish the 4th world
Finish the 5th world
Complete the main levels
Complete all the levels including optional levels
Jump 1000 times
Jump 2000 times
Roll for 1Km
Roll for 5Km
Roll for 10Km
Reach maximum top speed
Win your first star
Win half the stars
Win all the stars of the main levels
Win all the stars of the optional levels
Win all the stars
Collect half the blobs
Collect all the 21 blobs
Unlock your first skin
Unlock half the skins
Unlock all the skins
Leave the orbit in the hub world
Get directly hit by a cannonball
Make 100 tiny mushrooms fart
Finish any level without using your tongue
Finish any level without using your jump
Finish any level in less than 30 seconds