Here is the full list of all 12 Rollers of the Realm (JP) trophies - there are 8 bronze, 3 silver and 1 gold.
Collect 100,000 Gold
Get a score of 8,000 in the Catacombs Arena.
Get a score of 5,000 gold in the Gold Rush Arena.
Get a score of 150 in the Tower Climb Arena.
Get a score of 10,000 gold in the Woodland Raid Arena.
Play for 600 minutes
Get a score of 5,000 gold in the Pit Fight Arena.
Collect all Upgrades in Campaign Mode
Hit Experience Level 10
Finish Campaign Mode
Deal 10000 Damage in Campaign Mode
Allow party members to fall to their deaths 100 times.