It gets very, very messy and chaotic at times, as Zeds come at you from all directions or you struggle to take down a deadly cocktail of the tougher enemies, but you’re regularly assisted by ‘Zed Time’, a few seconds of slow motion that’s randomly triggered when you land headshots.ĭr. The game throws dozens of these your way at a time, with the goal to survive one wave at a time on the way to the final boss fight.