Shotguns have the shortest range among all guns, making them most suited to close-quarters combat, not unlike shotguns in most other games. Another similarity is the very high damage per shot that shotguns sport, which allows even the most basic shotguns to instantly kill most unevolved enemies with a well-placed point-blank shot, even on the highest difficulty. Even stronger evolved enemies rarely take more than three point-blank shots to kill, maybe four on Nightmare difficulty for the toughest.
Despite the high damage, the short range is just as much of a consideration. Enemy melee attacks are often significantly more dangerous than enemy projectiles, if not because higher damage then because melee attacks are actually capable of inflicting status effects (assuming they aren't shielded against). The fact that shotguns leave you in range for melee attacks means that using a shotgun requires more careful maneuvering in order to avoid damage, thus using a shotgun may be preferred for the more experienced, or at least for those willing to take the extra hits. Firing a shotgun does knock you back slightly, so moving with this in mind can improve maneuverability.
List of all Shotgun CoresEdit
All stats are per trigger pull. All shotgun cores fire 8 shots per trigger pull. Durability decreases by 1 per shot fired; where other guns lose 1 Durability per trigger pull, shotguns lose 8 Durability per trigger pull due to the "shots per fire". The weight is of the gun core alone; once linked with a heatsink and barrel, the heatsink's and barrel's weights are added on. All shotgun cores have 1.00/sec rate of fire, 8 shots per fire, 3 range, and weigh 0.50 kg.