I was walking in Pilgrim Path when a wild archer (Flamme Archer) appeared on my way. After dying 3 or 4 times I managed to kill him. For revenge 
But I’m intrigued with it…
Journal:
its not a bug archers/mages hurt in this game and you only have 6k hp so its natural, tho that mob is not even supposed to be in that map.
Someone probably summoned that monster there via red orb, maybe to kill bots or just for fun.
I’m lvl 149, the archer 124, I use the whole armor +3 /+4 shield 