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Hardcore Tactical Play

For professional Killing Floor 2 teams, even “Hell on Earth” can eventually become predictable. Controlled Difficulty (CD) is a specialized mutator that allows admins to define exact spawn cycles, increase the max number of Zeds alive simultaneously, and force specific squad compositions (e.g., constant Fleshpound waves).
Reading TimeDifficultyLast Updated
5 minutesAdvancedJanuary 2026

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1. Installation

  1. Download the latest version of Controlled Difficulty from the Steam Workshop or GitHub.
  2. Add the Workshop ID to your server’s Subscription list.
  3. Activate it by adding the following to your Startup Arguments: ?Mutator=ControlledDifficulty.CD_Survival

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2. Configuration (CDConfig.json)

Unlike standard mutators, CD uses a separate .json file located in the server’s root directory. This is where you define:
  • Spawn Modifiers: Increase the total Zed count beyond the default limits.
  • Squad Presets: Load specialized wave patterns used in competitive tournaments.

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Last Updated: January 2026 | KF2: CD Mutator active.