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