Here is the full list of all 9 Garden Rescue achievements.
3000 coins accumulated during one level.
50 enemies liquidated by mines.
More than 100 plants put.
More than 1000 opponents defeated.
10 levels completed in a row on 3 stars.
More than 50 enemies sprung out during the whole game.
All levels completed on 3 stars!
10 times played the same level.
100 opponents dropped by the lawn mower.