Hi before the game die i want to show you how to use some of the new guns in the campaign, this have all achievements unlocked too!!! , just follow the next steps
1) Open the game
2) Go to "SETTINGS & PERFORMANCE"
3) Open "Export game state"
Warning: Before do the next step copy and paste that in a note on your PC
4) Open this: https://notepin.co/shared/nubbtrj
5) Copy and paste that in "Export game state"
6) Click in "Apply game state"
7) Play and enjoy