Lets see what I can get through.
DLC - There are going to be at least 5 DLC packs:
1 - Gaige - The Mechromancer - A new character class to play. Free if you pre-ordered the game or $9.99 to buy. Gaige's skill is the deathtrap robot. An interesting character, depending on which tree you pick she can be easy, medium or hard to play... Very sweet. Gaige is available for download now.
2 - 4 expansion packs between now and June with the first hitting this Tuesday (10/16/2012). These can be bought all as a pack for $30 or $10 each separately.
DLC is... fucking DLC... I got this whole love/hate thing going on with it.
Size - This game is freakin huge... I have one of each of the five characters going, they range from level 6 to level 22 and my furthest along character still does not see the end of play through one... And I know there are a lot of area's I've still not really explored. With all the expansion packs, this is going to be one monstrous game.
Circle's of Slaughter - The Circle's of Slaughter are back and more fun then ever. I have only done one round of one of them so far but it was an epic solo battle. Held in a multi-level arena that threw three waves of large numbers of bad guys both easy and hard. It took me almost 30 minutes to complete and was a total blast. The bigger, more varied arena was exactly what these things needed.
Challenges - When I first looked at these, I thought... Holy Crap there are a lot more challenges. Now... WTF? Just how many challenges are there going to be? There have been a crap load more challenges revealed as I've gotten further into the game... Some of the 'level specific' challenges I've not even figured out what they mean yet, much less how to complete them This also translates into loads of glorious stats for me to pour over and obsess about, I love it except that... They have the same freaking problem as in B1, they fucking stop once the top goal is reached... Dammit, I want running totals that go on forever that tell me how many of each bad guy I kill
ack... Gotta go back to killing, I really want to get one character through play through one soon and start putting out some character builds for solo'ing.