Majority of my dreams are of the Stephen King variety and have been for as far back as my memory bank goes... I'm usually on the brink of being murderized in some way or another, and on rare occasions I've been the bad guy.
Lucky for me I've been lucid dreaming since age 11, so I wake myself up moments before I bite the dust.
I remember when I was on meds, the dreams were way more vivid, which took it to whole new level of intense, but it didn't last too long.
Nightmares suck, I feel for you, but I don't know any better