Vampire Survivors players will know the feeling of finding a powerful weapon and putting it to good use. However, if you want to get the most out of your weapons, you'll need to learn all of the Evolutions in Vampire Survivors. To unlock these, you need to combine weapons with specific passive items or they'll never unlock. Thankfully, we've put together a quick list for you below that gives you all the information you need to unlock every single Evolution and Union in Vampire Survivors.