There are 170+ chests in the game, most of which contain Red Orbs. There are 18 Gorgons Eyes, 18 Phoenix Feathers and 3 Uber Chests (2 of which are your final upgrades) that you can get. Use the link below as a guide to finding all the Chests. If you collect every chest in the game, you should get this specific Trophy about the time you face the Kraken. The game does provide more than 18 Eyes and Feathers, so don't worry if you miss one early in the game because it will eventually show up later in the game. You do NOT have to upgrade the Blade of Olympus to get this Trophy and it can be gotten in Bonus Play or Challenge of the Titans.
http://www.gamefaqs.com/console/ps3/file/971800/51382Note: This guide specifically points out when your health/magic increase, where all 3 Uber Chests are, and where all 4 Single Player Urns of Power are.
All credit goes to original authors at playstationtrophies.org, and this is merely updating truetrophy fans with these guides.
http://www.playstationtrophies.org/game/god-of-war-ii/trophy...