Papulatus
Prequests:
Start the questline of Protect Ludibrium from Mr.Bouffon
Obtain 10 Talchions from killing mobs
Return to Mr.Bouffon to trigger the next part of the questline
Obtain 300 Talchions and 100 Mysterious Powders from killing mobs
Return to Mr.Bouffon to trigger the next part of the questline, A Piece of Crack
Obtain 3 Piece of Cracked Dimension (A,B&C) from Giant Spirit Vikings or Grim Phantom Watches
Return to Mr.Bouffon and then speak with Flo
Flo will give you A Piece of Cracked Dimension
Hunt for 1 Ludibrium Medal from Gatekeepers or Thanos in order to enter Papulatus (failing to have one will not let you or your party members enter)
Papulatus:
Up to 6 members (full party) with all their prequests and ludibrium medal done
Drop the Piece of Cracked Dimension in front of the hole on the right side. After a few seconds, the crack should disappear into the hole and trigger Time Sphere to appear
Defeat Time Sphere (the middle part of the map) and will then trigger the first body of Pap and then defeat that to trigger the last body.
Upon defeating the boss, clear some etc space in order to obtain your reward of 25 trophies.
This boss can be done twice a day for a total of 50 trophies.