our character dies after necrophobia 2, where necrophobia 3 aswell as the necrophobia prequel are just things he imagines as he dies.

now hear me out on this one, the player, after making it to the keycard door half-way through necrophobia 2 cuts himself up in a shaft with 4 working saws and falls into sewage, causing for some NASTY bacteria to get into his bloodstream (so much ♥♥♥♥ particles, piss particles, and im sure he contracts the disease from the headcrab zombies that were resting there.) which only weakens him as he goes through further, hence the more worked-out jumpscares, his state of mind getting weaker as his body too starts getting weaker. The last time he turns on his van is on the way to a hospital, where he crashes and dies, landing in a purgatory like state where he now has to suffer through the same experience in places he TRULY hates, which would explain how necrophobia 2 has no continuity with necrophobia 3 aswell as the prequel, which also explains how the player knows how to drive in necrophobia 2 and the necrophobia prequel.