Backstab Blade

Backstab Blade is an upgrade for Leon Chameleon's  Slash.

Description
Slash will deal 24% extra base damage per stage when an enemy target is struck from the back (indicated by a special animation and sound effect), up to a maximum of 48% extra base damage. This damage bonus also applies to Leon's Clones which will also deal increased damage when striking an enemy target from the back. However, the damage will still be halved (i.e: Backstab Blade will add 12% damage per stage up to a maximum of 24%).