For those who cannot be bothered to find the unlock methods themselves.
This brief guide will spoil the unlock methods for each unlockable shotgun. If you want to enjoy figuring it out yourself, then you should probably stop reading now. If you don’t know where to start, then here is a hint:
-Try increasing various stats of your shotgun to excessive amounts
That little hint should give you all you need to know to acquire the four other shotguns for yourself. For those who can’t be bothered, then the unlock methods are below.
-Increase the range of your shotgun to 6-8. Sniper Scope counts.
-Obtain 100% knockback chance
-Increase your loaded shot amount to 4 (force feeding does not count)