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There wasn't a save for this so I decided to go ahead and play it myself. The game's been completed once and you can load any check point to unlock any of the story related trophies at the appropriate story points and there's only one hat left to collect, as you have beat the game first before you can begin to collect the hats.

This isn't a True 100%, though, because it's been confirmed that you have to clear the game from the start without using hints in order to unlock the Don't Need No Hints trophy. I did that myself in a single play through, only took about 4 hours and I definitely recommend playing before going for the final hat, which is located in the first story checkpoint of Act V. Just the same, I've done most of the hat collecting for everyone.

If you're so inclined, you can look up the necessary checkpoints for the appropriate trophies in order so that your list looks legit before playing the final checkpoint without using hints to see if it pops, but I doubt it will. Enjoy.