Grouped Reclaimer/Shutdown because 7 and IMO those were the two worst.
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Gameplay? Requiem. Easily. It's the only one I can actually enjoy playing without glitching/speed running/Mythic-ing. From a story/atmosphere point of view? Midnight. Because of the atmosphere and one of the best damn character evolutions and deaths I've ever seen. Points off for the Didact "payoff" though.