Otogi 2: Immortal Warriors

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

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

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

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

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

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

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

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

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.

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

 