It starts right after the cutscene and you'll have to follow Atreus to hunt down the deer.
*Now with 2 additional saves. One including a changeable difficulty and the second a file right after finding Mimir
It's on GMGOW difficulty (Give me God of War) and *NOT MODDED*
It's also not New Game+, so the enemies should be around level 2-3 in the starting area.
- Didn't use any mods or editors for this save
- Made to save people a minute or two by skipping the cutscenes and getting right into gameplay
- Still possible for you to get the Axe and *Other* Upgrade achievements (Not entirely sure if NG+ would give you the achievement, since you already have the Axe fully leveled up.)
UPDATE 1: Added a Give Me a Challenge save file, so you can change the difficulty mid-game.
UPDATE 2: Added another save, right after cutting off Mimir's head. I've also collected most of the available collectibles.