Here is the full list of all 17 Math+Sticks - there are Coffee Break Club achievements.
First level completed
Complete 20 levels
Complete 35 levels
Complete 50 levels
Finish all levels
Complete 15 consecutive levels without losing and/or restarting a level
Replay a completed level
Restart a level once
Restart a level 5 times
Lose the game once
Lose the same level 5 times
Complete one level in each theme
Find a secret solution in level 58
Unlock all achievements
Click on the matchbox 50 times
Complete one square root level
Complete one exponential level