There are a lot of 'guys with swords' around here, but I'll presume you're specifically referring to the one I'm fucking.

That would be because he's literally just some guy whose primary life skill is swinging around a sword pretty good and also, I guess, not getting bitten by things. That's it. He can't, say, blast his way out of a jail cell with some cellar mold, a tooth I stole from a fellow prisoner, and a little creativity. He'd just get marched to the headsman as handsome as he is furious, fuming at the irony.

Did I address all aspects of your concern?