Item description:

This will award several trophies, some of which are the hardest to obtain in the game, such as completing the game on Stygian/Within 99 Weeks.

Ending_Stygian Save
104 Weeks Save
All Ancestral Relics
All Caretaker goals
Defeat Brigand Wvulf

I am a dumbass and didn't put instructions, but I believe in getting the ending and weeks; you just need to advance a couple of times and finish the final boss.

For the ancestral relics, I did something really dumb; I believe it was before or during the battle with the brigand, as if you venture off into both of the side rooms and the middle room, you can attain three relics during the fight.

The caretaker goal should be just finishing the mission or getting 1 person up to max level or something; I hope someone can update what they did to get the trophy for these saves.

104 weeks will pop the previous weeks save, so be careful if you want it to look legit.