All the Music is Composed by Rocky Gray.

Assault - Plasma Shock | https://www.youtube.com/watch?v=3rz5h_dydkY |

Control - The Evil Zed | https://www.youtube.com/watch?v=F1pBuKRrR40 |

Stealth - Pumpkinhead | https://www.youtube.com/watch?v=4SZ-8WJmFTE |

This Soundtrack (The Assault Part) Plays, When the Players are Fighting Against the Final Boss Named Matriarch in Killing Floor 2.