Complete the indicated challenge to unlock the corresponding bonus from Bob B at Naomi's Place.

Challenge	Bonus
Amon's Sunglasses	Defeat Amon.
Beads of Good Fortune	Complete Challenge Lockers (unlock all one hundred lockers, under and above ground).
Dragon Sarashi	Complete Challenge Hostess Maker (complete all hostess side missions for Hostess Maker).
Dragon Shirt	Complete Challenge No.1 Hostess Maker (train all hostesses to reach the number one spot).
Ebisu Socks	Complete Challenge IF7-R (defeat all enemies).
Golden Gun	Complete Challenge Mini-games (complete each mini-game).
Hercules Gauntlet	Complete Challenge Modding (make all weapons and gear for both Works Kamiyama shops).
Journal fo a Rare Sign Maniac	Complete Challenge Fighter Maker (all apprentices have won the Rookie Tournament).
Kokurenkai Belt	Complete all of Akiyama's side missions.
Kokurenkai Headband	Complete all of Tanimura's side missions.
Kokurenkai Undergarment	Complete all of Saekima's side missions.
Limbo 2: Night of the Limbo	Complete all of Kiryu's side missions.
Luck Mallet	Complete Challenge Hostesses (complete all hostess side missions).
Lucky Binding	Complete Challenge Dining (order everything on the menu at every restaurant).
Muramasa Blade	Complete Challenge Coliseum (win all tournaments).
Rage Armor	Complete Challenge Police Scanner (solve cases received on the scanner).
Rage Bracelet	Complete Challenge Gang Encounters (defeat all gangs).
Rage Talisman	Complete Challenge Friends (become friends with specific people around the city).
Sacred Tree Arm Guards	Complete Challenge Master's Helper (complete all of Master's tasks).
Sacred Tree Armor	Complete Challenge Saigo's Training (complete all of Saigo's training courses).
Sacred Tree Shin Guards	Complete Challenge Nair's Kumite (help Nair reach her objective).
Substitude Stone	Complete Challenge Revelations (see all revelations).
War God Amulet	Complete Challenge HEAT Action (use all HEAT Actions).
War God Talisman	Complete Ultimate Skills at the main menu.