Place it at the weapon pickup in a game montage, after an alert that an enemy is near and before the shooting starts. Follow it with a pump shotgun hit for the reload beat, then cut to the action so the moment stays focused on the heavy gun.
About this sound
This clip pairs Team Fortress 2 Heavy voice lines with the game's shotgun-pump sounds, used in place of the original Metal Slug audio for a closer match to the weapon on screen. The result feels loud, playful and deliberately over the top, like a heavy gunner showing off. It was assembled by a fan in Audacity from voice lines and pump sounds gathered for the edit.