You need to make the weapon level 8, get the accessory, and you have to pick up a chest box after 10 minutes mark.
- Whip & Hollow Heart evolve into Bloody Tear : deals critical damage and absorbs HP
- Magic Wand & Empty Tome evolve into Holy Wand : fires with no delay
- Knife & Bracer evolve into Thousand Edge : fires with no delay
- Axe & Candelabrador evolve into Death Spiral : can pass through enemies with no limitation
- Cross & Clover evolve into Heaven Sword : deals critical damage, but less damage area then cross
- King Bible & Spellbinder evolve into Unholy Vespers : the weapon doesn't end.
- Fire Wand & Spinach evolve into Hellfire : can pass through enemies without limitaion
- Garlic & Pummarola evolve into Soul Eater : increases in power during HP recovery, and steals hearts.
- Santa Water & Attractorb evolve into La borra : damage zones follow the player and grow as they move.
- Lightning Ring & Duplicator evolve into Thunder Loop : attacks twice.
- Peachone & Evony Wings evolve into Vandalier : union of Peachone & Evony Wings, you can save 1 weapon slot after evolution.