Here is the full list of all 19 Fine Sweeper achievements.
Step on 5000 bombs
Flag 50,000 bombs
Try to cheat
Expert Mode unlocked
Beat Level 50
Make it to Level 10 without a single mistake
Make it to Level 10 without any pick-ups
Make it to Level 40
Make it to Level 30
Clear the whole board in 1 click
Pick up a Full Heart Container
Pick up 113 hearts
Make it to level 7 in less than 1 minute
Beat a hi-score of 100,001
Start a Custom Game
Have all heart containers filled
Make it to Level 20
Make it to Level 10
Launch Fine Sweeper