Following RAW, you need to apply some means to stop its regeneration. I wouldnt recommend using torch as an improvised weapon. Applying it while troll is helpless due to being KO is -5 to all defenses and granting CA, I am fine with it being an autohit to torch it.<br/><br/>RE torches in the street, the troll (and others?) probably attacked during daytime. It was only just gathering dusk when you guys showed up, and the bodies been dead a while. This is a village square and people socialize indoors after dark. Good for daytime gatherings though.<br/><br/>Edit: parking something on it might stop it from standing up. Getting something heavy enough on it that you can move in 6 seconds would be difficult at best.