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