The Ultimate Weapon of Vincent Valentine is the Death Penalty, a rifle found in Lucrecia's Cave. The weapon starts out quite weak, but gets stronger the more enemies Vincent kills. Most gamers might prefer to switch to another weapon early on, but sticking with this rifle can prove to be extremely lucrative in the long run. You need 768 kills from Vincent to reach a 1.0X damage multiplier, but if you grind heavily (and we do mean *heavily*), the Death Penalty's damage output will overflow, causing each enemy to die in a single shot. This includes the WEAPON super bosses.