If I had to pick just a few, it's impalement, decapitation, and mauling. I like executions/executioners and torture, so the idea of seeing a girl succumb to the headsman's axe or getting herself caught in a spike pit is very exciting to me. Torture devices and traps are very appealing to me in general (my favourite being the iron maiden). I also like combat deaths. Getting run through with swords, caught on a large scythe, or covered in deep axe wounds is a very beautiful sight. I like to see a lot of blood. As for mauling, I love the idea of a large monster or multiple vicious animals treating a body like a dog treats a squeaky toy - especially if they get just as excited about it and cant help but fuck into the remains!