Where can it be found

Random event while burrying bones.

Tactic

Turn on protect melee and attack it. Try to have food with you just in case your prayer falls. They are however fairly easy to kill if you have 60 plus defense.

Examine Message

The walking dead!

Notes

This is a random event Zombie, and as such, its combat level varies depending on your combat level. Having a combat level of 91 plus will trigger a level 159 zombie