Syndicate/YMMV


 * High Octane Nightmare Fuel:
 * The Leonardo Device (used by the Syndicate to "enhance" their agents), a giant wheel that holds the subject in a "Vitruvian Man" position (hence the name, presumably) and then rips bits off them to replace with cybernetics.
 * There's also the agent 'recruitment' process, which involves finding a random innocent civilian with the appropriate physique, kidnapping them, implanting a mind-control chip in their brain to suppress their free will, then strapping them into the aforementioned device to receive modifications.
 * Surprise Difficulty:
 * The expansion pack, despite using the same map structure in the original game, is much harder than the original. You pratically need to memorize the map and in-mission events before you can even attempt to complete the level.
 * Even more surprising is the very first thing that happens in the sequel, Syndicate Wars. Your one agent starts on a long exposed dock, and is immediately shot in the face with the most powerful weapon from the original game.
 * Most Wonderful Sound: The Persuadatron working its magic. The exact same sound has been inherited by the 2012 game.
 * The minigun's short bursts of death. Again, inherited directly.