Play at least once against all enemy races.

Complete a mission.

Finish the Training.

Entered and completed more than 25 Online races

Kill Hermes and acquire his Boots

Get a kill streak of 5.

Completed Day 2

Cover Kratos in 500 buckets of blood by killing the enemies

Kill Hades

Discover the secret 'Hades Arm' room

Kill Poseidon

Activate the Desert Ruin laser.

Win in each of the three modes.