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