Bioshock Infinite: Burial at Sea
It may sound strange, but I liked the DLC more than the game itself. The reason is because the DLC returned to Rapture and Rapture is better than Columbia. No, I'm just kidding. The real reason is that the return to Rapture brought back the gameplay with more tactical combat, less action and more stealth. They made the skills more useful such as freezing water to create a bridge and freezing water to bypass the electrified water. This is the type of interactivity that I felt that Columbia lacked. The level design adopted many curves and staircases which enhanced the tension by giving opportunities for the player to sneak around. The DLC restored that horror atmosphere from Rapture that Columbia traded for action. I really liked the splicers pretending to be manequins.
Very often in Bioshock Infinite I felt that the tears created by Elizabeth didn't bring anything new to the gameplay. For example: to use her powers just to summon ammo crates and health packs was so underwhelming. Couldn't they use her powers to do something better than that? In the DLC there is a scene where Elizabeth opens a tear right inside a safe, because inside the safe all the bottles containing the Ice skill where empty. In some alternate reality there was one plasmid available.
For me, the second part of the DLC, playing as Elizabeth, felt refreshing. Because it deviated away from the action oriented Bioshock Infinite and brought a slower paced gameplay with more story driven narrative. Elizabeth is weak and can't carry strong weapons, forcing you to play in a different way.
The worst thing is the plot itself. From a logical point of view, Burial at Sea is a huge mess that combines the grandfather paradox with the idea of parallel universes seen in super hero comics and movies. They tried to make Columbia and Rapture part of the same timeline, where technology of one world was shared with another world and scientists from different parallel universes shared they discoveries. Burial at Sea ends trying to explain things that initiated Bioshock in the first place.
The story really doesn't make sense. It's a loop that doesn't make sense. The ending of Bioshock Infinite has the player teleported to Rapture for no reason. The DLC dealt with an alternate Booker and an alternate Elizabeth in a way that cannot be explained by any logical reasoning. The addition of the time travel paradox just created a mess of a story. I think that they connected both Columbia and Rapture just because it was the same guy who had conceptualized both universes. How did they explain the skylines inside Rapture? They didn't! They couldn't find any reasonable way to do explain them and just added them because this is a DLC.