That's right. nine videos.
First up, is a 25 minute gameplay video that offers my general impressions and thoughts about the game and gameplay. This one does not contain audio from the game (the other videos do) as I was recording while in TeamSpeak with one of the developers and some things need to be kept undisclosed.
I won't shove all nine videos in your face right at this moment. However, if you're too eager to check out the other videos right this second, you can do so by checking out this handy YouTube playlist for Killing Floor 2. You will see map specific videos for the three maps currently in the beta (Outpost, Burning Paris, and Biotics Lab), a look at the flamethrower weapon (in the Outpost video), a look at each of the game's current classes (Medic, Berserker, Commando, and Support), and a look at character customization.
Being the first one posting a video like this could get you a nice amount of views, since I can't find anything closely related besides the dev's official diary posted long ago that doesn't really show that much of dismemberment
By the way I don't know if anyone told you (the person who got it or someone else who tried), but someone has already gotten the key. I was very happy that I managed to find all the parts but I also wasn't surprised to find out that it was used already. Thanks for the chance though!