Key Used to open safes for items and helpful information. Hammer Once equipped, hitting walls in the adventure mode of the game will cause hidden doors and items to appear. Candle Useful to see rooms that have no light. Glasses Equipping these can reveal hidden doors. Transceiver Functions as a radio to talk to trapped goonies and even Konami themselves. Diving Suit Needed to access the underwater levels. Ladder Gives access through hidden entries in the ceiling and floor. Helmet Given by the woman without glasses, it will prevent icicles from causing damage to Mikey. Bulletproof Vest Prevents damage from geysers and waterfalls. Bulletproof Vest Doubles Mikey's defense.