Mansion Keys
- Armor Key: Unlocks doors with armor symbols.
- Sword Key: Unlocks doors with sword symbols.
- Shield Key: Unlocks doors with shield symbols.
- Helmet Key: Unlocks doors with helmet symbols.
- Small Key: (Chris only) Unlocks drawers and small locked containers.
- Lock Pick: (Jill only) Replaces Small Keys for Jill.
Emblems & Crests
- Moon Crest, Star Crest, Sun Crest, Wind Crest: Used to open the secret passage in the Main Hall.
- Death Mask: Four masks are needed to open the coffin in the crypt.
Other Important Items
- Ink Ribbon: Required to save your game at Typewriters. Always keep a few on hand.
- Dog Whistle: Used to summon dogs in the courtyard, leading to a specific item.
- Battery: Powers the elevator in the Residence.
- V-JOLT: Chemical compound used to weaken Plant 42.
- Fuel Canteen: Used to refuel the Flamethrower (Chris only).
- MO Disks: Used to activate the self-destruct sequence in the lab.