Tripwire have released a large update to popular wave-based FPS, Killing Floor. Included in this free update is a brand new game mode. “Objective Mode” adds escort and retrival missions to the traditional wave-based formula, allowing for even more frantic action. Also included with the update are new weapons and skins, as both paid DLC and in-game unlockables. Here’s the trailer:

Killing Floor will also be available free to play for a week, starting tomorrow.