Vampire Survivors’ new Emergency Meeting DLC adds eight weapons, eight passive items, and – you guessed wrong – seven weapon evolutions to the game. Here are the combinations you need to get those evolutions.
The new passive items you get are a variety of mini-crewmates. The fact that they’re all just color variations of basically the same thing can make it difficult to remember which upgrades what weapon. I can easily remember that the Impostor mini upgrades the Sharp Tongue, since that’s their thing. The others you can maybe remember by the fact that it’s the weapon that the character starts out with.
Or, maybe just keep this handy(?) chart for reference:
One thing to note is that the Party Hat and mini-horse do not evolve. I am not sure why that is. The horse seems like a good little guy. The Cherry Bomb, Bone, and Celestial Dustings have evolutions. Why not the Party Hat?
No use worrying about it. You have the weapon evolutions; now go find some Impostors.