Area 51 Cheats :
Cheats - Secret Rooms/Levels
To unlock this weapon, beat the first Main enemy (boss). Look around
Cheats - Unlock Final Secret
by Unregistered Apr 30, 2005
In the stage Life or Death, there is a small key on a dead soldier in one of the lifts where Cole starts the stage. Grab it to open the small lockers in the stage. One of the small lockers in the first power conduit pit has a databank item that upgrades the alien grenade (it now homes in on enemies).