No missable achievements (plus 22 unknown)
Sign in with Steam or Xbox to track your progress, and:
Complete the "morning" chapter.
You look lonely, have you considered a pet to keep you company?
Don't get hit!
Play and submit your best time for Survival Mode.
Upgrade a unit to MAX level.
Reach 3000m in Escape mode, and he's yours.
Appears randomly in Survival mode. May luck be with you.
Last for 3 minutes in survival mode.
Waltz into Wave 10 and rescue him from that Fire Golem.
Send 2500 enemies to their grave.
Complete the "noon" chapter.
Loot 100,000 gold from the corpses of your fallen enemies.
Complete the "evening" chapter.
Something's cooking on the title screen.
Start a new game in Insane Mode.
Complete the "night" chapter.
Go as fast as you possibly can. (Hint: Upgrade + Song)
Complete the entire campaign from start to finish without dying.
Unlock the mythical 4th party slot.
Fact: There are 1609 meters in a mile.
Do all the things! 100% Completion.
Post a score in the Day 2 Insane Mode leaderboard. The most exclusive of all leaderboards.