After beating the game with the best ending you unlock the Boss Rush Mode, which can be accessed in the Special Menu on the main screen. You must defeat 10 bosses in the shortest time possible to get your rewards.
Boss Order:
Creaking Skull
Manticore
Great Armor
Man-eater
Big Golem
Head Hunter
Death
Legion
Balore
Graham
Rewards:
– Less than 4 mins: Valmanway
– 4-5 mins: Positron Riffle
– 5-6 mins: Excalibur
– 6+ mins: Potion
Boss Order:
Creaking Skull
Manticore
Great Armor
Man-eater
Big Golem
Head Hunter
Death
Legion
Balore
Graham
Rewards:
– Less than 4 mins: Valmanway
– 4-5 mins: Positron Riffle
– 5-6 mins: Excalibur
– 6+ mins: Potion
