Third mission, Fog of War, one codex requires the player to kill all the Germans without raising the alarms, which as I understand it means you have to melee them. The other codex requires the player to not use any melee attacks.
So I'm wondering if it is possible to do both in one run rather than replaying the level, hopefully by some attack that's a one hit kill and if done right won't alert the other guards, and isn't melee.
I thought the bayonet charge might do it because you're not just whacking someone on the head like a normal melee attack...