Beat the game on normal or hard with both Chris and Jill to unlock sporadically appearing Kamikaze zombies, which must be avoided as they pursue you throughout the mansion. Destroying them will blow up the game.
New costumes
Complete the game, then select the Once Again option. The key you have unlocks the door in the room on the second floor with the large mirror. There is a new costume inside for Jill or Chris. Beat the game again for yet another new costume.
Unlimited Rocket Launcher
Beat the game in 3 hours or less, and select the Once Again option to start with the Unlimited Rocket Launcher.
Samurai Edge
Beat the game in 5 hours or less, and select the Once Again option to start with the Samurai Edge weapon.
Real Survivor Mode
Beat the Once Again game in 5 hours or less, and unlock Real Survivor mode, which starts you with manual aiming, an unlimited handgun, and new costumes.
Invisible Enemies
Beat the game twice with Jill or Chris, to play with transparent enemies.
Special Features
Beat the game on Invisible Enemies mode in 5 hours or less to unlock special bonus features.
Almost unlimited Ammo For Gernade Launcher
Once you obtain the Gernade Launcher and another set of ammo (Flame/Acid) goto the nearest Item Box and follow these easy steps:
1. Deposit all items.
2. Pull out your Gernade Launcher (Make sure it goes to the upper-left section).
3. Pull out a case of Gernade Rounds (Make sure it goes to the upper-right section).
4. Leave Item Box.
5. Equip Gernade Launcher.
6. Re-open Item Box and deposit the Rounds (Doesn't matter where).
7. Go to the left (into the Item Box) and press A twice on the Rounds.
The Gernade Launcher should still be in your inventory with 20 rounds. Exit the Item Box and check your inventory and it should read 240 now. To get 240 of other ammo, just swap the 240 rounds with another type and repeat all steps.
Unlock Dangerous Zombie
Complete the game as both Cris and Jill to unlock the "One Dangerous Zombie" option. A special zombie will follow you and will follow you around the game and will end the game if you shoot it.
