I am VERY annoyed. It is my opinion that DLC should add extra to the game, but not be critical to the game. This DLC was clearly the latter. While one could choose not to get it, it reveals a MAJOR part of the story. This should have shipped with the game, not as a DLC. Additionally, it did not correctly detect the original game or whatever so I had to start without all my augs, etc. Not a big thing, but it certainly irked me. At least the DLC was long enough (something like 4 main missions and 1 real side quest) to make its cost slightly tolerable. /rant
WRT to the gameplay, it's more of the same. If you enjoyed the main the game and played a certain style, then this is a direct continuation. It is slightly difficult if you have to start out with no augs like I did so I had to play stealth the first few parts.
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