Sniper Elite 5

You need 150 kills per weapon. But first you need to unlock all weapons by complete kill challenges.

There is a few glitches that is you do complete the kill challenges but it doesn't count.
Update: Bugs has been fixed.


I found the easiest and quickest method to farmer kills is in mission 2.

You need non-lethal ammo for your pistol. Set starting location to CHATEAU STABLES. Then start the game.

There is a workbench in the building in South direction. ( The workbench can be used to change all weapons you have unlocked.) Pacify all enemies near the workbench. Or maybe you need to find more enemies.( 15 enemies is optimal , Because there is a ribbon Indicate you have ghost kill all 15 soldiers)

Take them to the room where the workbench located. ( For pistol, I recommend Don't stack all bodies in one place. For SMG, Stack all the body in oneplace is a better choice)

Save before you kill them all. And you can kill them all with your SMG or pistol. Then load game, repeat this progress.

This is very quick. After you have complete one gun, you can change your gun in workbench and Complete all six. It will take you less than 1h in total.

You can also use this method to complete Pistol achievements.

There are two main ways to acquire masteries for each secondary weapon. You can play through the campaign and acquire kills using each weapon, or you can play survival where you can farm kills much more easily. You can do both modes simultaneously to gradually make progress if you'd like. Survival consists of 12 waves spaced out in 4 locations. Each wave consists of 15-40 men depending on how many players are in the lobby. Get up close and use your secondaries in burst shots to save on ammo. Make sure to loot them to acquire ammo as you will melt through your supplies.

Each secondary weapon has 3 medals you need to acquire. 50 kills gets you bronze, 100 kills gets you silver, and 150 kills gets you gold(mastery level). Some weapons are locked and will need to be unlocked by playing the campaign. I have listed the requirements down below if you need them:

- Welgun SMG (unlocked at the start) - 150 kills

-M1A1 Thompson (unlocked at the start) - 150 kills

-Machine Pist.40 (unlocked by completing kill challenge in Mission 1 (kill target with an explosion. Grenade will do just fine)) -150 kills

-Machine Pist.44 (unlocked by completing kill challenge in Mission 4 (kill target using a rat bomb. Knock the target unconsiously and just place him near the bomb.)) - 150 kills

-Stengun MK2 - Complete Mission 6 Liberation - 150 kills

-Type 100 - Complete kill challenge in Mission 5 (kill target by burying him in concrete. Once again knock out the main target and make sure to turn on the concrete machine from a control switch nearby. Once the concrete machine starts spewing the mix you can throw his body down below where it will disappear and unlock the Type 100)) - 150 kills

Once all 6 weapons have a gold medal you will unlock this achievement. You can check your progress in the service record bar, clicking medals, and finally weapons/items. It'll say 7/7 medals in mastery of secondaries because there is an additional medal to unlock for getting 6/6 of the weapons mastered.

Cheers hopes this helps.