You die in the terrorist level.
Shepard betrays you.
You and Ghost (Gaz) get killed in a fire.
Russians invade, U.s. president dies.
Nuke goes off on east coast.
After dying, you play as Soap.
Shepard trys to kill you.
As you die, you throw a knife in Shepard's face. Grenade of Grenade 4: Grenade Grenade 3 confirmed.
I'm not even sorry. :]
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Mods are fags