EA’s much anticipated Battlefield 6 is here bringing with it the return of a campaign to the long running franchise. The campaign features 9 missions and has miscellaneous achievement for each mission. This guide will help you unlock “Efficiency” in mission two, The Rock.
Efficiency requires you to destroy 10 mannequins within The Rock mission. Destroying mannequins in the middle of a war? You bet.
The spot to earn this achievement is about halfway through the level. You will eventually come to a tunnel area that is setup as a museum. Just beyond the museum the lights will get cut and you will be ambushed by the PAX troops that are blended in with, you guessed it, a bunch of mannequins.
As mentioned you only need to destroy 10 of them and between the 2 rooms you will have to fight through with them, there is seemingly 30 to 40 of them so you shouldn’t have too much issue finding 10. Just take 1 shot at each one and it will count as destroying it. The achievement will unlock once you’ve destroyed the 10th one.

That’s all there is to this one and while it is missable, it is a pretty easy one to nab without even realizing you’ve done so. We will be covering Battlefield 6 extensively so check below as we go through the campaign to help you unlock everything you need including collectibles.
Battlefield 6 Guides
Mission specific achievements / trophies
- Mission 1: End of an Era Achievement / Trophy
- Mission 2: Efficiency Achievement / Trophy
- Mission 3: Deep-Six Achievement / Trophy
- Mission 4: Sidearm Savant Achievement / Trophy
- Mission 5: Looks Like a Nail Achievement / Trophy
Campaign Mission Collectibles
- Mission 1 – Always Faithful
- Mission 2 – The Rock
- Mission 3 – Operation Gladius
- Mission 4 – Night Raid
- Mission 5 – No Sleep