Tripwire Interactive now offers a new Incinerate ‘N Detonate pack as a free update for Killing Floor 2, updating the Steam Early Access shooter sequel with what they say is 50% more content than before. Here's a video showing this off, and this post has a complete list of what's included. They also note that they plan on providing everyone with a chance to check this out, as this weekend the game will be free to play on Steam beginning on September 3rd. This trailer offers a look, and here's an overview:

Fans can expect a multitude of new features including two brand new perks, Firebug and Demolitions, each equipped with its own deadly weapons and grenades. The update also includes 2 new maps that introduce different types of gameplay tactics. Zeds are lurking in every dark corner in the terrifying underground Catacombs map and players must employ the sharpest strategies in order to fight and survive the Evacuation Point map.

With today’s free content update, KILLING FLOOR 2 becomes the first title to integrate and showcase brand new cutting-edge gore technology, powered by NVIDIA’s new PhysX FleX technology (for NVIDIA GeForce 770’s and above cards). This ground-breaking new technology enables more spectacular and realistic physics-led effects. For more details and a full list of hardware requirements, please visit: the Official KILLING FLOOR 2 Game Group on Steam.