Item description:

Monster Fanatic (Location: Sylvarant Field. What to do? easy press circle and land on the forest near Dirk's house. fight the dark skeleton and beat him for the Sword Dancer trophy. when done open up the menu and go to Statuses. go everyone's titles and just scroll from top to bottom. it should unlock both A Collector's Collector and Monster Fanatic. Now go to Thete'alla > Meltokio coliseum beat the solo beginner, intermediate, advance with Zelos! after beat advance again with whoever you want, at the end beat Seles for 'The Sister: Seles' trophy. now beat all party challenges to get Top of the Coliseum.)