Here is the full list of all 27 Shoppe Keep trophies - there are 8 bronze, 12 silver, 6 gold and 1 platinum.
Master Shop Keeper - Earned all other trophies.
Your shop held on for a whole year
Sold 20,000 items
1000 Thieves dealt with
Slain 500 Barbarians
Sold 10,000 items
Ordered 20,000 items
Ordered 10,000 items
Slain Barbingantua
Barbarian sword dropped
Slain 100 Barbarians
Slain your first batch of barbarians
Your shop held on for a whole month
You got knocked the frick out!
Harvested 200 Mushrooms
Sold 500 Potions
Earn 100,000 Gold profit
Cleaned up 100 corpses
50 Thieves dealt with
Your shop held on for a whole week
Earn 10,000 Gold profit
Sold 200 items
Ordered 200 items
Sold 50 items
Earn 1,000 Gold profit
Ordered 50 items
Slain your first thief