Halloween is upon us and John Marston is about to live a real nightmare in Rockstar's latest downloadable content for Red Dead Redemption. In Undead Nightmare, which is an independent chapter from the main story, Marston will indeed have to face hungry zombies and other mythical creatures too. Expect a lot of second degree here obviously (the beginning of the game actually reminds a bit of Braindead), it is safe to say that this additional content really is worth the 800 Microsoft Points ($10) necessary to get it. As the game has gotten a little more challenging as well, since you must apply the "Headshot's the only true stopper" technique in order to gun down zombies once and for all, those who play the game in manual mode should be pleased to prove their worth. Here is the first 10 minutes of the adventure a second part will also be added shortly. Update: Second video is up, with a little more action!