WTMG’s Jordan Hawes: “While Rebellion is trying to focus on having a fun time solo, much like the other games in the series and other similar games in the genre, it will always be more fun with friends or other players. There are secret items you can explore and find, one resembled Thing from The Adams Family. I saw it scurrying around the top of a train car and shooting it was enough to collect it. Zombie Army 4: Dead War being made by the Sniper Elite crew means that the slow motion x-ray kill camera is still in effect and its just as fun with zombies as it is with living enemies.”
Source: N4G PC E3 2019 Hands-On – Zombie Army 4: Dead War | WayTooManyGames