Item description:

Here's the trophy for completing the game on Death March. Any other difficulty trophies should pop at the same time.

Simply go to the Inn and meet Ciri, this will complete the quest and give both trophies.

You should be able to use the save for other trophies too, no witcher contracts have been touched, and all the missable cards for card collector are in your inventory. I'll likely upload the save for all cards in the near future.

I'd imagine you'll need the expansion pass content installed to use this, and the save's ready to go through the DLC, just make sure to drop the difficulty before you start.