Shotgun

Overview
The Shotgun is a short range weapon with high burst damage. It is great at close range but cannot hit things effectively at longer range. Unupgraded it is a little weak, but once upgraded it becomes a solid weapon.
 * Fire Rate:  4 / 10
 * Damage:   6 / 10
 * D. Output: 6 / 10
 * Ammo:      6 / 10
 * Range:      2 / 10
 * Accuracy:  1 / 10

Ways to use
The Shotgun is great for close quarters engagements. It can quickly dispatch multiple enemies at close range, being able to one-shot most if all pellets land on target.

Peek-a-boo
Shotgun is excellent for shooting enemies and then darting into cover, or waiting for them to come around corners. Just keep the short range in mind.

Run and gun
Due to the aforementioned close quarters capabilities, Shotgun is great employed in a run and gun style. Charge around the stages blowing everyone to pieces, but avoid getting between lots of enemies, and don't use this against Turrets or Bosses.

Baiting
Shotgun is a good pick for baiting. Alert an enemy, wait for them to come and then take them out. Against bosses, find something you can drive around in circles, attract the boss and then kite them around in rings, shooting behind you to hit them as they chase you.

Conclusion
Shotgun is a strong choice at any stage of the game, and it is quite affordable. Get it.Дробовик