Two independent public gameplay videos show the same objective: complete Chapter 2 without alerting anyone. Approach Eric, Tanya and Rachel from behind, keep their detection indicators from turning red, isolate each target before attacking and finish the chapter. This route is public-gameplay verified, but the videos do not expose a numeric build identifier.
Why now
A current achievement guide publishes a route while a dedicated game database still marks the accepted requirement TBD and launch reports describe tracking trouble.
One current independent guide reports that, after dying as a civilian, staying in the match and following spectator prompts can lead to a police return. Treat that flow as an unconfirmed single-source report: current official material does not document a guaranteed trigger, fixed probability or one mandatory perk.
Why now
One launch-period guide reports that a civilian can return as police, while official material does not document the exact perk, spectator or reinforcement conditions, so the useful answer is an Unconfirmed evidence and troubleshooting page.