Im even unsure how he'd come back, his his soul is contained within his head which necromancer chopped off, so unless ryan can regenerate an entire body from a head, then he is screwed forever
Sidenote but i wished they had taken the opportunity while he was alive to explore his relationship with his siblings, the failed creations of malivore as he called them, like he said he had no christmas but surely he would have had a family gathering so ryan is implying he didnt have a good relationship with the others or they flat out died