Here is the full list of all 18 Aptly Rolling achievements.
Eat a sticky shape
Accumulate 100 Mass
Accumulate 500 Mass
Accumulate 1000 Mass
Accumulate 2500 Mass
Accumulate 5000 Mass
Accumulate 10000 Mass
Accumulate 25000 Mass
Accumulate 50000 Mass
Accumulate 100000 Mass
Accumulate 250000 Mass
Accumulate 500000 Mass
Accumulate 1000000 Mass
Eat another player
Hit a spike
Top of the leaderboard with 1000+ mass
Fly really high!
Escape the map