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