Consequently, if you kill an NPC you lose points.

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Or at least points could help you kill zombies.

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For instances, most fermented drinks need to be boiled at some points, which will kill off bacteria, thus living off alcoholic beverages in times of cholera, others for dysentery and other types of water-borne illnesses.

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Score a kill, and you'll earn Bouncer Points, which you can then use in between stages to pump up your character's stats or pick up a new special fighting technique.

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And he may have scored points by not going in for the kill.

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Pratchett points to the first time Lara has to kill someone.

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