Here is the full list of all 36 Crashlands achievements.
Finally Defeat Hewgodooko.
Beat the game in Challenge Mode
Beat the game on Insane Mode
Craft 10,000 floors.
Build THE GONG.
Craft 1,000 floors.
Craft 500 walls.
Create 15 taxidermied creatures.
Defeat 100 Epic Creatures.
Defeat the Baconweed Fairy.
Defeat EMG.
Defeat IHO.
Defeat the Poteti.
Craft 100 walls.
Wear a full set of excellent (or better).
Craft 5 legendary items.
Set foot in the Tundra.
Defeat Hewgodooko in the Bawg.
Defeat the Ynnix.
Defeat Jessica.
Defeat Toomah.
Defeat 100 Powerful Creatures.
Defeat Blockstock.
Set foot in the Bawg.
Defeat Hewgodooko in the Savannah.
Defeat 1000 Creatures.
Defeat Baary.
Craft 100 floors.
Defeat 100 creatures.
Craft a legendary item.
Beat the first boss in hardcore mode
Get to Bawg in hardcore mode
Get to Tundra hardcore mode
Beat the hardcore mode
Beat the hardcore mode in challenge difficulty
Beat the hardcore mode in insane difficulty