Barbarian/Rogue is actually a pretty solid adventuring multi class tbh. Which is as it should be, as it's what Conan is.

Very much the opposite of a min-max build, more of a "It's just a rogue with melee staying power or a barbarian with more skills" kind of thing but that's good.

Plus, you might be able to talk your DM into letting you lock pick chests with a STR check like Kratos.