In multiplayer there are new unlockables called "Blueprints" which are custom variants of weapons in the game that have exclusive attatchments and paint jobs. You can view your blueprints by going to the "Weapons" tab in the multiplayer menu and clicking on "Armory".
For some reason the game doesn't explain how you're meant to unlock or use blueprints. But basically you get them by completing multiplayer missions in the "Multiplayer Challenges" menu, and you use them by going to the corresponding weapon in your "Edit Loadouts" menu and selecting the new "Armory" button that should appear next to it in the list.
If you happen to earn a blueprint for a weapon you havent unlocked yet, you can still use that blueprint by scrolling to that weapon and clicking the armory button. So this is a cool way to start using the most powerful weapons earlier in your career.
🥚 Dont shoot the baby!
In the "Clean House" mission, you will encounter a crying baby after clearing one of the rooms. If you shoot the baby once, you will fail the mission and respawn at the previous checkpoint (as you would if you where to shoot any other civilian). But if you where to shoot the baby for a second time a special message will appear on the screen asking, "Are you serious?" then ending the campaign completely and returning you back to the main menu.
🥚 Activision Game Console
After entering the "Inspire Electronics" shop in the Picadilly Circus mission, there are display units of a fictional game console named "Actibase" (named after Activision). If you go prone and look at the packaging of one of the consoles you can see screenshots of previous call of duty games and how much disk space the console has, which is a very measly and pathetic 120GB.
💡 How to Counter Proximity Mines
In multiplayer, Proximity Mines are those flashing red thingamagigs that bounce up into the air before exploding and are essentially the equally-as-annoying cousin of the Claymores, but they're also the only traps that have a major weakness.
To avoid getting killed after stepping on one, simply go prone before the mine explodes and you'll be fine.
💡 Overpowered Weapon Classes
These are 5 class setups you might wanna try in multiplayer if you wanna git gud.
#1 KILO141 (assault rifle)
Attatchments - Singuard Arms 16.6 barrel attatchment which increases the damage range, bullet velocity and recoil control. The Cronen LP942 Mini Reflex Sight for better accuracy. The Operator Foregrip for better recoil control. The Stippled Grip Tape for better ADS speed and the 50 Round Mags for good luck.
#2 M4A1 (assault rifle)
Attatchments - FFS 12.4 Predator suppressor and FORCE TAC QCS stock for better ADS. The Operator Foregrip for better recoil control plus the Stippled Grip Tape and 50 Round Mags like before.
#3 ODIN (asault rifle)
Attatchments - Oden Factory 810mm barrel for better damage range, bullet velocity and recoil control. The Cronen LP945 Mini Reflex sight for better accuracy. The Operator foregrip for more recoil control and the 25 Round Mags for good luck.
#4 PKM (LMG)
Attatchments - 18.2 Compact Barrel for better ADS and movement speed. The Viper Reflex sight for better accuracy. The Operator Foregrip and Stippled Grip Tape for even faster ADS. And the FORGE TAC Ultralight stock for better aim while walking.
#5 AK47 (assault rifle)
Attatchments - 23.0 RPK Barrel for better damage range, bullet velocity and recoil control. The Cronen LP945 Mini Reflex for better accuracy. The Stippled Grip Tape and 40 Round Mags for good luck.