Here is the full list of all 18 Force of Nature achievements.
Beat the game
Grow 500 roses
Grow 100 sunflowers
Grow 1500 wheats
Kill 20 rabbits
Cut down 1000 trees or bushes
Run 42km
Destroy 100 rocks
Sleep 10 times
Get Force of Nature shard
Eat 100 coconuts or bananas
Die first time
Kill 15 goblins
Get level 2
Beat the game in Hardcore mode
Kill 2500 enemies
Kill 1000 goblins
Die 10 times