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