Here is the full list of all 14 Tumbleweed Destiny achievements.
Defeated monster 20 times.
Completed the rebirth 10 times.
Completed the rebirth 6 times.
Defeated monster 10 times.
Saved the Earth.
Completed the rebirth 3 times.
Destroyed cactus 60 times.
Destroyed cactus 40 times.
Completed your first rebirth.
Could not save the Earth.
Defeated the monster.
Destroyed cactus 20 times.
Destroyed cactus.
Defeated monster 30 times.