Resident Evil: Operation Raccoon City
50 Achievements
1,000
44-56h
Chaos Averted
Kill an infected teammate with a headshot before they become a zombie in any mode.
5
How to unlock the Chaos Averted achievement in Resident Evil: Operation Raccoon City - Definitive Guide
At the very beginning of Chapter 3 you will be ambushed by a load of zombies in a very small room. Wait a few seconds and one or more of your squad members will become infected very quickly.
You will know they are infected as they will have a kind of Bio-hazard symbol next to their life bar. Once this happens, just blast away with headshots. Took a few shots before they went down in my game but once they do the achievement will pop.
Also, once you have this you can then revive the fallen squad member and carry on playing as normal with them still in your squad.
Best Farm Location: Literally anywhere with zombies.
This is a combat related trophy and it can be done either in Campaign Mode or Versus Mode. For the trophy, you must simply kill an infected teammate with a headshot before they become a zombie. You'll know when an ally is infected when the normal arrow icon above their head changes into a Biohazard symbol. Note that this symbol will also show whenever your AI or Human partner is grappled by zombies. Indicating a possible chance of them getting infected, simply don't help them and let them get infected. Then shot them in the head with any weapon with a precise headshot. The secondary weapon of the pistol will increase the chances of landing a headshot.
When a teammate becomes infected a purple Biohazard sign will appear next to their on screen name. Simply shoot them in the head before they turn into a zombie. The shotgun works well for this.
Here's a video demonstration: