Metal Gear Solid Delta: Snake Eater - How To Unlock All Weapons

Metal Gear Solid Delta: Snake Eater can be played in a lot of different ways, and completing the game in different ways can reward you with a lot of different things. One of the main ways you can change up how you're playing is by using different weapons.
There's a huge variety of weapons for Snake Eater, with a lot of the weapons you would expect for a game like this, and plenty of weapons that are much less traditional. Most of these weapons need to be found throughout the game, and missing them can mean missing out on what they can bring to the table for that entire playthrough.
Every Weapon And How To Get Them
From firearms and grenades, to poisonous animals and chemically-treated handkerchiefs, Snake Eater has a lot of tools for you to use to get through the game.
Unless otherwise stated, these are how to find the weapon during the second mission, which is going to be the bulk of the game.
Weapon
How To Get
Knife
You'll have this weapon unlocked by default.
Mk22
You'll have this weapon unlocked by default at the start, but you'll acquire it once you redeploy with a short amount of progression.
M1911
You'll unlock this weapon when you're redeployed.
SVD
This can be found in both missions. In the first, it's found in Dremushij North.
In the second mission, this is found in a weapon storeroom in Ponizivje West.
XM16E1
In the first mission, this is found under the Dolinovodno bridge.
In the second mission, it's found in the Graniny Gorki Lab Exterior area in a weapon storeroom.
AK-47
This is found in Bolshaya Past Base in another weapon storeroom.
Alternately, it can be found at the top of the staircase in Rassvet.
M37
In the first mission, this is found near the crates in the destroyed building in Rassvet.
In the second mission, this is found on the right path in the Chyornaya Peschera Cave, usually with snakes nearby.
M63
This is found inside a building in Svyatogornyj East, near a stack of boxes.
Scorpion
This is found inside the locked room on the first floor of Groznyj Grad Weapons Lab. You can gain access with the Officer Uniform disguise.
RPG
This is found in a small building on the Krasnogorje Mountainside.
Handkerchief
This is found inside the locker in the room with a single scientist in Graniny Gorki Lab B1. While this is a melee weapon, it does have a limited number of charges.
Cigarette Gas Spray
This is also found in Graniny Gorki Lab B1, this time inside an office.
Mosin Nagant
This is a nonlethal rifle, and can only be obtained by taking down The End in a nonlethal manner.
Torch
This is found between the waterfalls in the Chyornaya Peschera Cave, usually near a small group of crabs.
TNT
This can be found in many areas throughout the game.
Book
This can be found in many areas throughout the game.
Mousetrap
This can be found in many areas throughout the game.
Claymore
This can be found in many areas throughout the game. It can be grabbed if you slowly crawl up on a live claymore from behind, just be careful not to crawl too far and detonate it.
Magazine
Reloading an empty weapon is going to provide you with a magazine.
EZ Gun
This can be obtained as a reward for certain titles, or is available by default on the Very Easy difficulty.
Grenades
Every variety of grenade can be found throughout the game, and can be looted from enemies.
Single Action Army
This is unlocked by progressing through the game.
Patriot
This is unlocked after completing the game.
Animals
You can capture animals alive by using the Mk22 to tranquilize them. You can then equip them like any other weapon and throw them at your enemies; this is much more effective when the animal is poisonous.