Collect all of the Minotaur Horns

Completely upgrade all weapons

Blind 100 enemies with the Head of Helios

Summon every Soul with the Claws of Hades

Solve Hera's Gardens

Burn 100 enemies with the Bow of Apollo

Gut 3 Centaur Generals

Kill the Poseidon Princess

Kill Hermes and acquire his Boots

Cover Kratos in 500 buckets of blood by killing the enemies

Kill Hades

Upgrade any weapon to the next level

Kill Poseidon