Here is the full list of all 16 Rogue Explorer (JP) trophies - there are 5 silver, 10 gold and 1 platinum.
Unlock all other trophies.
Complete the exploration mode of "Abandoned Town".
Collect 50,000 coins in total.
Open 30 treasure boxes.
Get 500 items.
Collect 25,000 coins in total.
Beat 200 enemies.
Collect 5,000 coins in total.
Get 250 items.
Complete the exploration mode of "Mine Tunnel".
Open 10 treasure boxes.
Beat 100 enemies.
Get 50 items.
Complete the exploration mode of "Grassland".
Beat 5 enemies.
Open 1 treasure box.