Kill 2 enemies with a single bullet in Single Player or Special Ops.

Help train the local militia.

Kill Zeus

Save Pandora

Acquire the Boreas Icestorm

Solve Hera's Gardens

Open the Gates of Tisiphone

Kill the Poseidon Princess

Kill Hermes and acquire his Boots

Cover Kratos in 500 buckets of blood by killing the enemies

Rip apart 1 Olympus Sentry

Discover the secret 'Hades Arm' room

Acquire the Bow of Apollo