Video Guide
Mission 2 Dead Drop(We need to get enough kills with each smg to unlock the mastery for each, here is an easy grind)
Load up mission 2 on the easiest difficulty and sneak into the fortress near the back of the map. There should be seven enemies in this area as well as a truck with one driver. We want to quietly knock all of these enemies unconscious with our melee attack. Then pick up their bodies and pile them together in one of the rooms, making sure to create a manual save at this point.
From here we can start grinding pistol masteries and achievements for ghost kills, secondary masteries and achievements, we can also chuck a grenade at them for trap kills (and a triple kill with one grenade for an achievement), pick up any of the weapons they dropped and use those for found weapon kills, and there is even a heavy gun on the box in the courtyard we can use to grind out heavy gun kills. Every time we eliminate the group of enemies we can just reload our save and go again as all of this counts even if we don’t finish the mission.
Secondary Masteries require 150 kills with each secondary weapon.
Here is how to unlock every secondary weapon:
- MAS 38 - Unlocked at start of game
- UD-42 - Unlocked at start of game
- ERMA.36 - Complete the Mission 6: Assault on Fort Rouge Kill Challenge
- Model 1907 - Complete the Mission 3: Sonderzuge Sabotage Kill Challenge
- M1918 BAR - Complete the Mission 7: Lock Stock and Barrels Kill Challenge
- SIG MKMS - Complete Mission 7: Lock Stock and Barrels
- Stengun MK2 - Complete Mission 5: Devil's Cauldron
- Trench Gun - Complete the Mission 5: Devil's Cauldron Kill Challenge
As some of the Secondary weapons are unlocked through Kill Challenges, here is a guide for all Kill Challenges:
We can grind out the following achievements here: