"METEMPSYCHOSIS". Also you guys can check the passwords by opening the dialogue file and search for any known password eg: Open dialogue file and look for "SOLIDARITY"
I give you this info because some people love the story but cant't /don't care about RE READING fucking everything to look for passwords and want to progress and that's fine and valid, don't let anybody else tells you otherwise.
Fuck it: If you are stuck just try, MASSACRE, WEREWOLF, METEMPSYCHOSIS, BETRAYAL, THE END, LOVE. Enjoy the game.