Here is the full list of all 12 Idle Baker Boss achievements.
Franchise your first store
Consume 1k Full Coffees
Buy your first piece of land
Gain 1k gems through displays sold
Make 10k Exquisite Goods
Claim Gifts from completing 10 Challenges
Maximize profits from selling your store 3 times
Sell your store first store
Bake 500 Choc. Chip Cookies
Collect 10k Coins
Purchase 10 properties
Purchase 50 HQ Upgrade XP