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