Defeat all the BoneSlaves and the Boss in the Ghost Ship in one sesion whithout leaving the ship (m: None of this enemies respawn and the ship dissapear aften finishing it)
Breed any of your monsters with the Monster Tamer's Armorpede in the Arena after completing the Sea World (m: Available only before completing the Ice World)
Breed any of your monsters with the Monster Tamers's monsters in the Arena and Tavern after completing Ice World (m: One Tamer dissapear after the completing Sky World and the other in the Post-game)
Defeat all the Skeletors and the Boss in the Hunted Castle in one sesion whithout leaving the castle (m: None of this enemies respawn and they dissapear with the Boss)
Breed any of your monsters with the Monster Tamer's Gulpple in the Tavern after completing the Sky World (m: This character dissapear in the Post-game)
Defeat all the EvilArmors and the Boss in the Castle of Hitano in one sesion whithout leaving the castle (m: None of this enemies respawn and they dissapear with the Boss)
Complete and get all items in the Tower of Brawn World (Cobi) or Baffle World (Tara) in one sesion without living the Tower (m: Neither chest or enemies respawn)