To easily gain orbs, go to the Combat Arena and set your health and magic to infinite. Select the Easy difficulty setting and any desired enemies in the largest number possible. Use the "Scourge of Erinys" power at maximum. Since you have infinite magic and health, repeatedly press LEFT to gain Orbs.
Find the following relics by performing the corresponding tasks. Note: You can only use the item after the game has been completed.
RELICS - HOW TO UNLOCK Aphrodite's Ambrosia (Might of Sparta attack) - Complete the sex mini-game in Sparta three times. Athena's Owl (finds treasures). - After Kratos destroys the Athena statue in a cinematic, search the pile of debris on the right side. Bonds of Ares (unlimited magic) - Enter the Domain of Death through the Death Gate in Atlantis and look in the southern area. Callisto's Armlet (win context sensitive mini-games). - Immediately after defeating Callisto, search the ground near the battle. Grave Digger's Shovel (play as Zeus in Arena Combat) - Unlock everything in the Temple of Zeus and follow the path that opens. King's Ring (Collect 10x the amount of red orbs) - After King Midas turns the lava into gold, drop down by the area where he touched it.
Unlock the following costumes by performing the corresponding tasks:
COSTUME - HOW TO UNLOCK God Armor - Complete the game. Deimos - Complete the game. Robot - Purchase from the Temple Of Zeus for 70,000 orbs. Zeus/Gravedigger - Unlock all other bonuses at the Temple of Zeus, solve the puzzle, and use the shovel. Note - Only usable in combat arena. Legionnaire - Enter unique code provided as pre-order bonus.