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