Here is the full list of all 15 Tavernier achievements.
Beat the game in less than 40 weeks
Beat the game in 52 weeks
Meet the spirits' leader
Meet the zombies' leader
Reach 400 customers and 100% cool
Reach 100% tipping power and 100% pro
Stock more than 100 mana
Buy 24 ingredients
Buy 30 ingredients
Shrug 20 times across games
Reach both 100%cool and 100%pro in a single game
Meet two different faction leaders
Make a wish!
Make a second wish!
Beat the game