I don't think doha is the killer? Then he just a normal player?

I'm starting to agree except he's definitely not "normal" lol and he may be behind the reason none of them remember anything

I never fitted that he's the killer when he and the killer were at the same scene and he killed the killer multiple times, so he never was killer, yeah I agree there's something fishy about him ofc, and killed people for no reason too right? And the other guy was also kind of conscious but he's back to being npc that's weird too. Why are they in the game in the first place? Is that his doing or something cause he definitely knows the game. Just a theory