Here is the full list of all 94 Shop Titans achievements.
Hire many workers
Earn tokens at the Fortune Zone
Unlock all item types
Slay many bosses
Fully ascend several items
Spend a lot of common resources
Craft many items
Spend a lot of uncommon resources
Reach Rudo’s final rank
Upgrade a furniture to a high level
Reach Sia's final rank
Reach Yami's final rank
Reach Lilu’s final rank
Reach Argon's final rank
Expand your shop
Master many blueprints
Bring back lots of components from quests
Research lots of blueprints
Open many chests
Spend a lot of rare resources
Have a Hero reach a high level
Earn lots of gold!
Enchant a legendary item
Increase your merchant level
Make a lot of gold from a single sale
Spend a lot of energy
Deal massive damage with a single attack
Enchant many items
Enchant an item with both a spirit and an element
Sell a ton of items
Clear many quests
Hire many champions
Help fellow guild members