A couple of days ago I brought you guys an article stating that I got the first official DLC for Halo 4 for free. Turns out it was a bug indeed, but 343 Industries decided not to address it as a complimentary gift. However, not everyone will be able to get it for free as it is only available through a specific pre-determined conditions. 343 have detailed those conditions for us. For those that bought the Standard Edition of Halo 4 like myself, you’ll know that only 2 of the 8 specialization classes were available from the start and that if you played the Hal0 4 multiplayer in the first couple of weeks that you would get a download code in an email to unlock the other 6 specialization classes.
Now, the bug is that anyone who has redeemed that code is able to download the Crimson Map Pack for free! I believe the reason being that the code not only unlocked the other 6 specializations but also the Map Pack as well. This is available through Tuesday, December 18th so I recommend you get to it now! Also, full impressions from the Map Pack are coming soon as well so stay tuned here at Gamer Syndrome!
Article from Gamersyndrome.com