From GameWatcher: “Killing Floor 2’s newest seasonal update, Treacherous Skies, has brought welcome changes and additions to the addictive horde shooter new prestige rewards, two beautiful new levels, four weapons, and a brand new enemy type are just some of the features added to the game this Summer.”
Source: N4G PC Killing Floor 2 Prestige Rewards – 5 tips to help you prestige fast