As for the genji equipment, I'm sure you can't get it in this version by stealing from elmdlor, but instead, you get the Genji Armor from the Beowulf's special battle at chapter 4, and the Helmet, the Shield, and the Gaunlet (and I think you can get the armor, too.) throught cooperative/melee mode.

You can steal the Masamune from a Samurai from one of those Beowulf's Special missions.

I'll try to add as much as I progress.