Mafia 20. Radioactive Dreams.

Sunny was a Cylinder, judging by the description, he was killed by an Observer. The clues point to Megerson or Registrar...

Added 1 minute ago

I think the Mold smokers got killed, or am I lagging again? :(

Added 46 seconds ago
We're only worried about the Hatters, but has anyone forgotten about the Junkies? O_o.

No, Ple-Sen was killed by Cylinders. And since it was a pistol duel, it could be that Mr. Death redirected it....