Change your weapon to the grenades and hold Z until the throw meter is filled. When the grenade is being thrown, hold Z again until the meter is full. Repeat this until you are on the last grenade. When it is thrown, you will have 255 grenades.
All Levels Password
VZRFTMQ2G8SQ
Flash bang grenade survival
To be unaffected by the flash bang grenades, turn on night vision goggles. Leave them on untill the effects of the grenade wear off.
How to kill tangos
Without being detected In Mission: Deep Magic
This (Believe or not) is very simple, all you have to do is bring grenades (Mission: Deep Magic) and you can kill everybody with them without being detected ;)
Invincibility
At the title screen, press C-Right, then hold Z + B and quickly press R.
Level Passwords
On the main menu got to quick start and input on of the following codes:
Use the following trick to make your teammate following you pick a lock. Quickly press Up, Right, Down and quickly move away. This does not always work the first time -- you may have to try again. If done correctly, you will see the teammate that is following you rubbing his hand on the door, and you will hear a lock picking sound.
255 grenades...