You must beat the game after finding these relics to use them.

• Aphrodite's Ambrosia / Learn Might of Sparta attack - Play and "win" the sex minigame in Sparta 3 times
• Athena's Owl / Treasure detection - After teh cutscene where Kratos destroys the Athena statue, search the debri for this relic
• Bonds of Ares / Infinite Magic - In the Domain of Death, check near the Death Gate
• Callisto's Armlet / Automatically complete finishing moves - After defeating Callisto this is lying on the ground
• Grave Digger's Shovel / Play as Zeus in Arena Combat - Unlock everything in the Temple of Zeus
• King's Ring / 10x Red Orbs - When the lava becomes gold, drop down to the area Midas touched the lava