Here is the full list of all 54 Cast Out Colony achievements.
Someone is playing our game??
Play as Roxy
Play as Mighty Green
Play as Cid
Play as Queen Beatrice
Play as Cid in an Arena
Kill a boss
Defeat 2000 Venus Fly Traps
Defeat 1000 Moles
Play as Tato in an Arena
Destroy 20 acorn trees
Reach Lv. 3 with Velocity
Defeat 40,000 enemies total
Play as Roxy in an Arena
Defeat 2000 birds
Survive as any character for 20 waves
Play as Queen Bee in an Arena
Defeat 10 elite enemies
Reach Lv. 3 with Bloodsucker
Reach Lv. 8 with Zapper
Equip 3 Dash Skills in a single run
Survive 10 waves with any character
Be revived once
Play as Mighty Green in an Arena
Equip 6 weapons in a single run
Complete 1 run
Survive a total of 10 waves
Build the Carpenter
Build a Skill Tree
Build a Gym
Equip 5 projectile based weapons in one run
Defeat 5000 spiders
Reach Lv. 20 as Mighty Green
Survive for 120 waves across all runs
Reach Lv 25 as Tato
Receive luck from an Acorn Tree
Reach Lv. 8 with Bees
Use Banishing Blow 10 times
Reach Lv. 20 as Cid
Defeat 10,000 Bats
Reach Lv. 20 as Roxy
Dash 25 Times
Play in an Arena
Reach Lv. 1 Colony Enrichment
Reach Lv. 15 in a single run
Survive 13 waves in a single run
Reach Lv. 9 with any rare or higher active skill
Reach Lv. 3 Colony Enrichment
Unlock Crescent Moon Difficulty
Unlock Eclipse Difficulty
Unlock Blood Moon Difficulty
Play a run on Dark Forest
Play a run on Happy Lil' Forest
Play a run on Maple Ruins