"Hidden in plain sight" and "Hallmark of quality" do not work. I've picked up both weapons in two runs, but no unlock.

Is there a difference between them or is it just a glitch?

Some neat ideas in this imho, but some really annoying things in the demo: Nowhere NEAR enough ammo drops for a game that's constantly hurling hordes of zombies at you. Either give the player huge amounts of ammo at the start, or make ammo drops WAY more plentiful or maybe just make the pistol an "infinite ammo" weapon as many games other do. Otherwise you're reduced to Kicking, which is hopeless against larger groups of enemies. Melee is useless in the demo because there don't seem to be ...