Aries: the one who tries to confront the killer but ends up dead
Taurus: the one who has all the supplies; weapons, food, etc
Gemini: sets a trap for catching the killer
Cancer: is hiding up stairs with Pisces
Leo: guarding the room where Pisces and Cancer are
Virgo: tells everyone to keep calm and stick together
Libra: tries to diplomatically talk the killer out of murdering everyone
Scorpio: goes on a hunt for the killer for murdering Aries
Sagittarius: got bored in the beginning and left but comes back in the aftermath
Capricorn: the killer
Aquarius: disobeys Virgo's order about sticking together and keeping calm
Pisces: is hiding upstairs with cancer