You will be able to get plenty of different type of weapons in The Evil Within 2. Some of them can be rare and require a condition to be fulfilled while you will be able to pick the rest of them as you play through the game.
These weapons are all available within the main story so unless you miss them, you will be able to find them easily throughout the main story campaign.
How To Get Shotgun
There are different varieties of Shotgun that can be acquired. They are the following: Full Barrel Shotgun, Sawed-off Shotgun and Double Barrel Shotgun.
You will be able to get the full barrel shotgun in a storage shed in the business district south of Post Plus. It can be acquired in either Chapter 6-7 or Chapter 11-13.
Sawed-off shotgun is available at any of the following places on the survival and above difficulty setting: The Marrow: Armory, Tredwell Trucking and The Marrow: Facilities. Casual difficulty places it next to a car when you are on the way to Pit Stop.
Double barrel shotgun requires you to complete the side mission for Julian Sykes “The Last Step” and you can locate it in The Marrow: Experimental Wing.
How To Get Flamethrower
You will get a broken flamethrower after defeating the boss in Chapter 11 from The Marrow: Restricted Labs. You can then repair it by getting Flamethrower Fuel Tanks from the Harbinger enemies in the Business district.
How To Get Crossbow
Warden crossbow will be your first such weapon in the game although you can find more variety of arrows for it. This weapon can be located in the Residential district. There are four different types of ammo available for it including explosive bolt, shock bolt, smoke bolt and harpoon bolt.
The Evil Within 2 is available now for the PS4, Xbox One and PC.