Tripwire frequently offers free weekends on Steam. You can download the full 80GB, play for 3 days for free, and then purchase at a discount with your progress saved.
I appreciate you asking for a proper review, but I need to give you an important heads-up first: . Downloading Killing Floor 2 from there would be an illegal copy, often bundled with malware, no online multiplayer (since Steam validation fails), no updates, and no workshop content. killing floor 2 apunkagames
