Here is the full list of all 21 Braveland achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
The best equipment of all four types on.
Sigurd defeated.
Rain of Fire spell learned.
All warrior abilities learned.
Acceleration spell used 10 times.
Three treasure chests collected.
1000 damage inflicted to the enemies with Fire Arrow.
Arakin defeated.
All four equipment items on.
Page on Facebook or Twitter visited.
Fromm defeated.
Two warrior abilities learned.
Equipment item on.
Treasure chest collected.
Warrior ability learned.
You defeated the army without losing a single warrior.
Peasants have joined you.
Game completed without using the easy level of difficulty.
Game completed using only the hard level of difficulty.
Defense spell used 10 times.
100 units encouraged.