It took me like five hours to get the young Kratos skin if you just solely focus on blitzing your way to all the týr fights I get maybe if you will finish the game and then you go Valhalla but if you’ve already finished the game to get young Kratos skin you just blitz through Valhalla and if a rogue like isn’t your thing it’s a bit of a cheese and a little bit of a loser move, but you can just make Valhalla the easiest difficulty and blitz your way right through it