Probably a possible “checkpoint” from Denuvo or similar DRM manufacturers. One would define an “event” for the DRM to trigger. Sometimes it’s starting the game, starting a New Game, loading game/saving game, and so on. Perhaps Capcom thought to (perhaps aptly?) make the check that if you kill a zombie in the zombie game, it checks if you bought the rights to do so.
I have been on the internet for a very long time. Someone telling a story, no matter how emotional or dramatic is merely doing that: telling a story. Until there are real-world facts to back this story up: police report, pictures of any wound, etc. please take it with a grain of salt. There are many implicit biases on the internet and not all of them are obvious. I find it plausible that some people who browse 4chan attacked this person. I also find it plausible that it’s entirely unrelated or fabricated. What do I have which can sway my opinion other than what legally is known as “Hearsay”?