The boss battle that concludes Deus Ex's "Missing Link" DLC was built in house by Eidos Montreal, not outsourced. This is a small piece of development news that's a big relief to a lot of Deus Ex: Human Revolution fans. The boss battles in the main game were outsourced by Eidos to a little-known studio called Grip Entertainment, and are generally not regarded as positive experiences, shall we say. Instead, they seem almost like punishment.
The problem with the bosses in Deus Ex's main game: They needed to be taken down with sheer firepower, pretty much. If you've been playing the game like a stealthy coward, putting all your points into sneaking-around skills, it's jarring and annoying to suddenly run across a tank you have to drill with a million bullets. I wasn't even holding a gun at all when I fought my first boss in Deus Ex. It was pretty annoying. Not game-killing annoying, but pretty un-fun. We won't have these problems with the DLC.
"We have a boss battle at the end, but it's different from the main game boss battles," Eidos Montreal production coordinator Marc-Andre Dufort told Eurogamer. "You can actually not kill the boss. You can do a non lethal takedown on him. And you can kill him from afar. You can even kill him without him seeing you. It's more of a bigger challenge than a standard boss fight like we have in many games."
I have played about a third of the Missing Link DLC, (Check out my Missing Link DLC preview) and I give it the Steve Johnson Seal of Approval. You should check it out when it releases in October.