Borderlands – How to get into Gee’s arena in Hayter’s Folly

Yes, they do.

The only new weapons/equipment in Captain Scarlett's DLC are quest rewards and Seraph weapons, only purchasable from a shop inside the DLC. None of the new items are available outside the DLC, though if you get the items you can take them outside the DLC zone.

Source: we beat it the first day it was released. There appears to be no new chest-based/normal loot whatsoever. In addition I'm not sure if there are any rare drops, but there definitely are unique (blue) gun drops from several bosses in the DLC (and nowhere else, like other unique guns). Additionally this is exactly how DLC worked in Borderlands 1.

Elemental effects tend to take effect "around" the shield, so Damage Over Time can take effect, explosive rounds can cause some damage, and you can slag them. This is generally slow and will take lots of ammunition and time though. Grenades are a way to get explosive damage on them without swapping guns.

If you're a Siren you can simply Phaselock them and shoot their bodies. Otherwise try to move in and get around them. Alternately, stay way back and get a sniping headshot. The shields are the biggest problem at medium range; you really need to either get closer or get farther away. Also note if you're close, you can feint in close to them, at which point they'll slowly start a melee shield bash attack. You can get a second or so of free fire on their bodies while they do this.

You can also shoot through their shields, either by blasting off part of the metal (full metal shields) or by killing/freeing the midget from their shield. But the collision detection is extremely buggy around those holes, and most bullets don't seem to go through them right, so I avoid using this strategy.