Ass Pull: One of the endings reveals that Amy is actually a deep-cover MI6 agent who has been investigating Kensington's activities the whole time. This has absolutely zero foreshadowing, isn't even hinted at in the other endings, and is very likely to clash with how most players played her up until that point.
The Woobie: Clare's actions may be extreme but she nonetheless comes across as rather sympathetic because of her tragic backstory and what the nanocells do to her body. Even if Amy chooses to let her live, she probably will not survive without immediate medical attention and it is unclear if she receives any.
