Unlock the following masks by performing the corresponding tasks:
MASK - HOW TO UNLOCK Big Boss - Get the big boss emblem. When you wear this mask, it causes enemies near you to cower in fear and/or run away screaming. Crying Beauty - Defeat crying beauty without killing her. Drebin - Get over 60 weapons. FaceCamo - Defeat laughing octopus. This mask functions like the octocamo suit, but just on your head. Laughing Beauty - Defeat laughing beauty without killing her. Metal Gear Solid Snake - Start the shadow moses level. Otacon - Hit otacon with the metal gear Mk. II during an interactive mission brief. Raging Beauty - Defeat raging beauty without killing her. Raiden A - Hit sunny with the metal gear Mk. II during an interactive mission brief. Raiden B - Hit naomi with the metal gear Mk. II during an interactive mission brief. Roy Campbell - Hit campell with the metal gear Mk. II during an interactive mission brief. Screaming Beauty - Defeat screaming beauty without killing her. Young Snake - Start the eastern europe level. Young Snake with bandana - Start the eastern europe level.