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