Originally posted by Robtard
Normal fire can kill them; iirc, the US military alone has weapons that are far greater than a bonfire.If Hulk and Thor made some "wild love-making", they'd smash down skyscrapers.
IIRC, the twivamps can only be burnt once they're torn apart. It's the venom in their veins that are flammable so their insides need to be exposed first.
That said, normal fire seemed to work fine in the movies.