Please see the pinned post: About the Vermintide 2 - Bugs Category to see what information to include in your report. I was playing grail knight and bought a battleblade and never showed up in my inventory tried rebooting the game still nothing pls help. Steam Community :: csalzman
It looks like the Battleblade is present in your inventory. To clarify, the Battleblade is a Weapon Illusion for the Sword as opposed to an actual weapon.
If you are unable to locate the Weapon Illusion - could you please screenshot what you see when looking for it in the ‘Apply Illusion’ panel please?