Killing an enemy with gun play trait instantly reloads the other weapon. If she kills the enemy with primary, secondary will be reloaded, and other way around. This is can be tricky to use, and actually requires timing and a good situation. And since AI can't use melee weapons and doesn't use secondary weapons unless completely out of ammo or has a flag, Gun Play has almost no benefit or effect for them. However, if used properly, it is one of the strongest traits in the game. This trait is used by Calamity.