Here is the full list of all 26 Little Hats achievements.
Travel by riding a fox!
Ride on top of a deer!
He's gnot a gnoblin!
You found the Golden Horn!
You found the Golden Tuning Fork
You've successfully laid 100 bricks!
You've successfully crafted the clog boat!
You found the Gnome town of Ravenwoud!
Chop down 50 tree saplings!
You became evil!
You completed the Southern Steyndike Maze!
You completed the Middle Steyndike Maze!
You've found the ancient guardian Folkmód!
You found the Gnome town of Bolderberg!
You consumed the Green Door Potion!
You consumed the Blue Door Potion!
You have been eaten by a troll over 20 times...
You used 5 Speedplants!
You've sold more than 50 items!
You've bought more than 50 items!
You've mined more than 50 rocks!
You have found the legendary Frog People!
You made it out of Steynwoud and reached the lowlands!
You have crafted over 50 things!
You have found more than 5 caves!
You have found the Golden Frog!