Gameitall 
If you need a new reason to play DOOM again, the aptly named 6.66 update would be it. The update will retire the game’s premium season pass and make all of the multiplayer DLC content available to all players!
Doom’s Multiplayer DLC originally cost $39.99 (USD) as part of the season pass and contained three packs – Unto the Evil, Hell Followed and Bloodfall packs are now completely free. The packs where released between August and December of last year and together contained nine new maps, three more guns and three playable demons, plus armour customizations and special abilities.
The 6.66 update also makes some bigger changes to the progression system and item unlock. Instead of unlocking random items, players can now unlock specific items by reaching a specific level or completing in-game challenges. “Now, if there’s a specific helmet you want, you can work toward unlocking it by focusing your play style on the related challenge,” Marty Stratton, Doom’s director, said in a blog post.
Veteran players will have the option of keeping all the items they’ve unlocked or paid for prior to the update, or they can do a full reset to experience the new progression system. Either way, everyone’s level will be reset to 0, and all veteran players will receive a special badge while players who’ve reached max slayer level will get another badge.
Finally we have changes to the Hack Moduel System, which is now being replaced by a Rune system that is similar to the one from the single-player experience. Runes are persistent abilities included in your loadout that won’t expire and won’t need to be activated.
Bethesda made also made several other updates which you can read about on the company’s blog. Also for those who don’t have Doom yet, you can pick it up for the low price of $14.99 (USD) via your console’s digital market place.
