Death Mimic

OMG!!!!!!
How do you kill this guy, there doesn’t seem to be anything you can do that even phases him, tbh he slaughter me the first time and I meant to leave him alone the next time but accidentally clicked on him again
Anyone have any ideas?
How do you kill this guy, there doesn’t seem to be anything you can do that even phases him, tbh he slaughter me the first time and I meant to leave him alone the next time but accidentally clicked on him again
Anyone have any ideas?