They can and will, unless you pray to a cosmic Jew zombie for salvation
Since enough alcohol can kill a human, I would say it would also kill parasites living in or on human.
Many demons on Charmed used an athame (which is a dagger)to kill witches.
Necare is to kill. It applies to any living creature.
A demon would hurt a person, but not kill them. Yes they have the power to kill a person, but it would be much more satisfying to torture a human and feed off their anger & sadness. - Liz Valeria Ramos
Yes, they can.
Incubus are demons that find pleasure in preying on not just single women but any woman. They are the fantastical versions of modern day rapists. They sometimes kill their victims or let them have children which turn into demons that can help to destroy the human population.
human
Kill lots of lessers demons and greater demons, they drop rune armor.
Some demons can come back to The Light. Perhaps ALL have that ability.
Hanyou
Demons you mean? Yes in some cases.
Dante is a half demon (the son of a human woman and the demon general Sparda). His father was the demon who protected humankind by sealing the rest of the demons into another dimension. When Dante was a child his mother was killed by a demon. Since then he acts as a mercenary for hire, only willing to kill demons.