The passive item will be consumed while evolving, and can be obtained again through leveling, or pick-ups.. The Operation Guns DLC for Vampire Survivors collaborates with the Contra franchise to bring new characters and weapons like the Short Gun. Here is how to unlock and evolve the Short Gun in Vampire Survivors.
Prototype B is a weapon in Vampire Survivors. It is the evolution of Short Gun, requiring Weapon Power-Up and Bracer.. Getting the Short Gun and the opportunity to evolve it to Prototype B opens up means of unlocking more in Vampire Survivors Operation Guns.