The Super Shotgun of Doom 3 looks a lot like the classic Super Shotgun and has nearly equivalent strengths and weaknesses, because of it being a replica. However, it has the same tactical value. Extremely powerful, firing both barrels at once will instantly kill most monsters at close range and severely wound more powerful monsters, but the shotgun loses effectiveness at long range. It reloads rather quickly but its low ammo capacity and single shot can prove slow in a crowd of monsters.
The differences between the super shotgun and the regular one are mainly that the super shotgun (as its nickname implies) is more effective and can cause much more damage. Another significant difference is that it only holds two shells at one time (enough for one shot from the weapon). It uses the same kind of ammunition as the shotgun - shotgun shells. Unlike its classic Doom predecessor, it is far more accurate than the regular shotgun.
After obtaining the Super Shotgun, the player can switch between the two shotgun versions using the "3" key (default shotgun key).
The Super Shotgun is particularly more powerful than its classic counterpart as it can kill any enemy up to a Revenant in one body shot (two in the classic), provided that all of the pellets connect, and can even kill an Arch-Vile in one headshot if you are very skilled or lucky. If aiming for the head, the Super Shotgun can kill powerful foes such as Hell Knights with two shots. When going against multiple foes or a powerful foe, use The Artifact so that you have enough time to successfully evade attacks and get close to a target without getting hit. Using the helltime power of The Artifact is also recommended due to the shotgun's slow reload time, which would normally make you vulnerable to fast-paced attacks from monsters such as Vulgars. The Super Shotgun is not recommended against enemies that can be killed with one shot using the regular shotgun, such as Imps and Z-Secs, although new players may use it for sure one-shot kills on enemies that require advanced tactics to be killed with one shot using the regular Shotgun, for example Tentacle Commandos and Revenants.