Here is the full list of all 21 Braveland achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Defense spell used 10 times.
1000 damage inflicted to the enemies with Fire Arrow.
Acceleration spell used 10 times.
Page on Facebook or Twitter visited.
Sigurd defeated.
The best equipment of all four types on.
Rain of Fire spell learned.
All warrior abilities learned.
Three treasure chests collected.
Arakin defeated.
All four equipment items on.
Two warrior abilities learned.
Fromm defeated.
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.
100 units encouraged.