Here is the full list of all 22 Bardbarian achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Fact: There are 1609 meters in a mile.
Start a new game in Insane Mode.
Unlock the mythical 4th party slot.
Complete the entire campaign from start to finish without dying.
Complete the "night" chapter.
Go as fast as you possibly can. (Hint: Upgrade + Song)
Complete the "evening" chapter.
Loot 100,000 gold from the corpses of your fallen enemies.
Send 2500 enemies to their grave.
Appears randomly in Survival mode. May luck be with you.
Reach 3000m in Escape mode, and he's yours.
Last for 3 minutes in survival mode.
Play and submit your best time for Survival Mode.
Complete the "noon" chapter.
Waltz into Wave 10 and rescue him from that Fire Golem.
You look lonely, have you considered a pet to keep you company?
Upgrade a unit to MAX level.
Something's cooking on the title screen.
Complete the "morning" chapter.
Don't get hit!
Do all the things! 100% Completion.
Post a score in the Day 2 Insane Mode leaderboard. The most exclusive of all leaderboards.