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