I bought an xbox360 years ago with a game stuck in it. I have since lost them but I enjoyed the game. It was large bulky man carrying a sword and possibly shield. I remember there was island type landscapes but I dont remember swimming or anything. Possibly there was dragons but I think I may be inventing that because of other games. It was old timey in terms of setting, castles, sand and stone. I dont remember magic.
If not Viking Battle for Asgard, could it be El Shaddai Ascenion of the Metatron? Or perhaps it was something that just felt like it was medieval, like Enslaved: Odyssey to the West or NIER (2010)? Or maybe Kingdoms of Amalur: Reckoning or Lost Odyssey maybe?