Here is the full list of all 16 Matchsticks - there are Coffee Break Club achievements.
First level completed
Lose the game once
Complete 10 levels
Complete 25 levels
Complete 50 levels
Finish all levels
Complete one math level
Complete 15 consecutive levels without losing
Replay a completed level
Restart a level once
Restart a level 5 times
Lose the same level 5 times
Complete one level in each theme
Find a secret solution in level 57
Unlock all achievements
Click on the matchbox 50 times