Unlock Cyclops
Go to the Config menu and choose voice. Then play these numbers to
unlock Cyclops for purchase: 5, 60, 66, 60, 11, 60, 25, 60,
60.
Unlock Cyclops Type-1
Go to the Config menu and choose voice. Then play these numbers to
unlock Cyclops Type-1 for purchase: 3, 39, 74, 21, 28, 43, 79, 82,
91, 61, 69, 32, 96, 25, 4, 66, 49.
Unlock Diablo Beta
Go to the Config menu and choose voice. Then play these numbers to
unlock Diablo Beta for purchase: 89, 17, 8, 29, 31, 58, 93,
81.
Unlock Diablo Tiger
Go to the Config menu and choose voice. Then play these numbers to
unlock Diablo Tiger for purchase: 2, 37, 2, 36, 2, 38, 2.