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