Missable!
For this trophy, you must collect 15 Minotaur Horns to fully upgrade your fire meter to maximum. There are plenty of opportunities to collect these for there are more than 15 Minotaur Horns in the game. Once you've collected the 15th Minotaur Horns, this trophy will be yours. All other Minotaur Horns chests found later in the game will turn into red orbs chest with either green/blue orbs.
This is PowerPYX's guide. All credit goes to his fantastic work. He list all 45 colelctible's unlike playstationtrophies which only site first 15 of each.
http://www.powerpyx.com/guides/god_of_war_ghost_of_sparta.ht...