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