Here is the full list of all 33 Voodoo Garden achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
reach voodoo level 30
produce 10 000 items
produce 240 voodoo dolls
collect 6666 mushrooms
collect 666 lizardtails
expand garden 20 times
collect 2000 dragonflywings
plant 20 trees
click skull 10 times
collect 1234 snailhouses
own 1 000 000 gold
collect 3333 roots
click crocodile 30 times
reach voodoo level 20
plant 15 shrubs
collect 999 snaketeeth
expand garden 10 times
erect 7 totems
collect 444 beenests
own 100 000 gold
plant 10 herbs
produce 1000 items
sacrifice 11 animals
sell 7 trees
sell 5 shrubs
sell 3 herbs
free 3 spirits
restart game
scare 88 bats
reach voodoo level 10
own 10 000 gold
produce 100 items
collect 69 froglegs