To burn all the goods in Monger’s warehouse in Port of Lawlessness in Korinthia in Assassin’s Creed Odyssey bring out the torch and attack all the piles of sacks in the warehouse.
All Korinthia Guides
All Assassin’s Creed Odyssey Guides

Use a torch to burn the pilas of sacks to burn all the goods in Monger’s warehouse in Port of Lawlessness in Korinthia in Assassin’s Creed Odyssey
There are 4 downstairs and one upstairs.