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