Assault Makarov's safe house.

Execute the plan to help the Americans.

Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.

Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.

Mastered the Medic role.

Mastered the Synergist role.

Mastered the Commando role.

Defied destiny's charge and embarked on a different path.

Took over 10,000 steps on the lowerworld surface.

Traveled to the world below, seeking a way to alter fate.

Recognized the true threat to the world's future.

Carried the burden of guilt to the end of the line.