Successfully complete the game. Then, go to one of the following locations to 
find the corresponding character(s) and have a final interaction with them:

  Fire Baron: In the jungle directly north of the tree island at the bottom of 
  the last continent. He is to the left of the main road as soon as it turns, 
  traveling south to east. 

  Infantry/Army: At the Beach Party 
  Lita: In front of Lars's tombstone at the cemetery. There will be a brief 
  cutscene where you share a moment of silence with her. The moment will last 
  and the time of day will shift until you press [Interact] again. 

  Mangus: On top of the large sword in Blade Henge. Note: Use the nearby 
  Landmark Viewer. 

  Ophelia: In front of the large stone cross near The Hunter in the Grasslands 
  (located to the left of the huge sword on the map). Eddie will ask if she 
  wants to make out. A cutscene will play of the two kissing until you press 
  [Interact] again. 

  Rima: On top of her tower in the jungle 
  Thunderhogs: At the Kill Master's Lair. You can drink with his bassists and 
  comment on Lemmy's bass playing ability.