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