Collect 100 resource items.

Kill 30 enemies by using the grappling hook and making them fall to their death.

Fly an airplane close to the ground for 30 seconds.

Kill 50 enemies using melee attacks.

Kill 50 enemies by headshots.

Complete story mission 1.

Slipped through the net and lived to fight another day.

Rip apart 1 Olympus Sentry

Cover Kratos in 500 buckets of blood by killing the enemies

Kill Hades

Discover the secret 'Hades Arm' room

Acquire the Bow of Apollo

Online: unlock 3 weapons in the Recon kit