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