Here are all the weapons that have been spotted in artworks, interviews or the game itself.
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MP-40
https://m.imgur.com/cBqydgf
MBP .50
https://m.imgur.com/GR1MIOV
Compound Bow
https://m.imgur.com/Qjx6f4M
Frag Grenade
https://m.imgur.com/GpDOCnz
RPG-7
https://m.imgur.com/WxKxHms
Molotov Cocktail
https://m.imgur.com/r4VRFL1
Mossberg 500 + Boot Knife
https://m.imgur.com/gEJCOWK
Minigun
https://m.imgur.com/RpM8guE
CZ Skorpion
https://m.imgur.com/U6bkBVf
Sledgehammer
https://m.imgur.com/31mgKuD
IDK Some kind of carbine?
https://m.imgur.com/IHYas3f
Makarov
https://m.imgur.com/AKTeKS4
D-2
https://m.imgur.com/KhrRgli
M4
https://m.imgur.com/lUmLs5Y
AK-47
https://m.imgur.com/lzXlmin
Dynamite Stick
https://m.imgur.com/JPqklyD
MAC-10
https://m.imgur.com/6kdWF49
S&W Model 19
https://m.imgur.com/wgkN5Hs
Remington 870
https://m.imgur.com/550QrnO
AR-C
https://m.imgur.com/2JQQWf9
M1911
https://m.imgur.com/JinlgOG
Baseball Bat
https://m.imgur.com/RAkTds2
Browning M2
https://m.imgur.com/BcBGQjk
Pitchfork (No in game picture yet but confirmed in an interview)
http://www.istockphoto.com/it/foto/f...28133-27225617
And ofcourse the almighty FIST
https://m.imgur.com/3AeNpBR

