Here is the full list of all 13 Bravery: Rise of The Last Hero achievements.
Become a Beginner Hero
Be an extremely charitable person
Cause 500,000 damage to enemies
Spend the night at the inn
Defeat 200 creatures of the night
Tell a little lie
Drink something of doubtful origin
Take a trip
Get saved from a trap by someone
Defeat your first Boss
Discovering the first cave
Help Severin at the farm
Defeat your first Mini Boss