James Bond 007: NightFire Cheats

First, enter multiplayer, and choose the weapon set "explosives 2." When you pick up a remote grenade, switch to detonator(hit B), then hit the reload button(usually A). Then, pick up another remote grenade, and reload again. If you continue picking them up, and reloading after every pickup, you should be able to reach over 100 in your inventory.