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