It is normally obtained by completing the Original Characters Trapped Easter Egg, although if one is playing solo with the Stand-in achievement/trophy, or co-op with the Ensemble Cast achievement/trophy, it is also given after killing George A. Romero along with a Random Perk Bottle. The power-up looks like the normal Death Machine power-up but when picked up, it will grant the player a Wunderwaffe DG-2 instead. The Wunderwaffe DG-2 will last until the player runs out of ammo, and cannot be Pack-a-Punched. Picking up a Death Machine power-up will cause the Wunderwaffe DG-2 to be replaced by the Death Machine and getting downed will cause the player to lose the Wunderwaffe DG-2. While holding the Wunderwaffe DG-2, the player is unable to purchase wall items, switch weapons, throw grenades, buy perks, pick up or place Claymores, or revive teammates. Players are allowed to Dive to Prone, build barriers, buy doors, sprint and Knife.
- The Lightning Bolt and the Death Machine are the only power-ups in zombies that do not affect the entire team directly. Only the person that grabs the Lightning Bolt power-up will receive the Wunderwaffe DG-2.
- The power-up drop is the same as the Death Machine. The only difference between them is that the bullets point upward while the Death Machine's bullets point downwards.
- It can also be possible to obtain as well as its upgraded version via console commands by binding give Tesla_Gun_ZM and give tesla_gun_upgraded_zm with a button.
- The upgraded version is missing a texture thus making it look white.
- Max Ammo will replenish the Wunderwaffe's ammo.
- The Lightning Bolt should not be used against George A. Romero, as it will do merely one damage (this is the minimum damage needed to anger George).
- Two players cannot have the Wunderwaffe DG-2 at the same time. If George Romero is killed a second time, and a player is still holding the Wunderwaffe DG-2, he will drop a Death Machine instead.
- PhD Flopper takes away the DG-2's harmful splash damage.