Here is the full list of all 44 What The Duck achievements.
We don't do deliveries!
Collect 30 items
Finally: Ducks!
Don't lose in a bird fight!
Why does Hellen looks like a protagonist?
Do you realise what you are getting into?
Leave your hometown!
Enough plumbing for today
Defeat the Rooster
Reach Quattro
Defeat an enemy with Hellen
Find out why Hellen and Illy are a good team
Defeat the Tiger
Get familiar with Sette's locals
Would you change your Animal if you could?
This can't be the end... Right?
Complete 5 Sidequests
Complete 15 Sidequests
Complete 37 Sidequests
Collect 60 items
Collect 100 items
Expand your backpack
Get a Fish
Get 3 different types of Fish
Craft 2 Weapons
Craft 10 Weapons
Craft 18 Weapons
Get 10 different Marbles
Get 25 different Marbles
Get 55 different Marbles
Use the Burn condition on an enemy
Use the Freeze condition on an enemy
Use the Shock condition on an enemy
Use a 3rd level condition on an enemy
Defeat an Alpha Bull
Defeat an Alpha Crocodile
Defeat an Alpha Scorpion
Defeat 20 regular enemies
Defeat 60 regular enemies
Throw an enemy marble out of the ring
Win a marble match
Craft a low quality weapon
Craft a medium quality weapon
Craft a high quality weapon