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