Unlock Kintoki's second weapon
Complete Stage 8 with Kintoki to unlock the Blazing Axe.

Unlock Kintoki's third weapon
Complete Havoc Mission 12 to unlock the Red Lotus.

Unlock Raikoh's second weapon
Complete stage 14 with Raikoh to unlock the Divine Blade.

Unlock Raikoh's third weapon
Complete Havoc Mission 17 to unlock the Falling Star.

Unlock Raikoh's fourth weapon
Buy it from the shop during 2nd Play for 317,000 gold to unlock the Moonlight Sword.

Unlock Sadamitsu's second weapon
Complete Havoc Mission 4 to unlock the Shrieking Blossom.

Unlock Sadamitsu's third weapon
Complete stage 20 in two and a half minutes to unlock the Black Wings.

Unlock Seimei's second weapon
Complete stage 13 as Seimei to unlock the Twin Dragons.

Unlock Suetake's second weapon
Complete Havoc Mission 7 to unlock the Eight Truths.

Unlock Suetake's third Weapon
Complete Havoc Mission 13 to unlock the Divine Punishment.

Unlock Tsuna's second weapon
Complete stage with Tsuna to unlock the Thunder.

Unlock Tsuna's third weapon
Purify both Centipede Demons in Stage 22 to unlock the Wrath.