Getting the Star Crest:
Go to the hall with the numerous paintings and crows. Put the switches behind the paintings in the following order: new born baby; infant; lively boy; young man; middle-aged man; bold looking old man.

Save ammunition as Jill:
When playing as Jill, do not shoot the first zombie that is standing over Kenneth's body. Instead, run into the dining room. Barry will speak to Jill before the zombie comes though the door. Barry will shoot it three times, blowing off its head.

Save ammunition as Jill or Chris:
Stand behind the statue in the room above the dining room. When the zombies come up on the other side, they will try to walk through the statue leaving you free to knife them to death.

Change clothes:
Rescue the other two players and finish the game. The phrase "You've got the special key" will appear after the credits. Save the game. Start the game that was just saved. Enter the room with the large mirror on the second floor of the mansion. Unlock the door in the back. Enter the closet and move all the way to the end of the rack of clothes. A message asking "There is an outfit that fits you perfectly, do you want to put it on?" will appear. Select "Yes" to change your character's clothes.

Rocket launcher:
Successfully complete the game without using any saves.