Tripwire Interactive's zombie-slaying shooter Killing Floor 3 has been hit with an eleventh-hour delay. Due to release at the tail end of this month, the co-op first-person shooter has now been delayed, with the developer citing the response for its recent closed beta as the primary reason. In a delay announcement published on Twitter, Tripwire Interactive acknowledged that it had "missed the mark" with the closed beta, which has sparked criticism from many of its players. "After taking the time to gather and discuss feedback from our recent closed beta, we've realized that we missed the mark," the announcement reads. "Our goal isn't just to make Killing Floor 3 an ambitious step forward for the franchise, but also to maintain the core experience that you've come to know and love." The studio says that, with the backing of parent company Embracer Group, it has made the decision to delay Killing Floor 3's release and take additional time to polish up the experience.