| http://www.w3.org/ns/prov#value | - These segments, including an exciting on-foot chase sequence, help keep the game fresh throughout the eight-hour experience.Beyond the single-player campaign, Splinter Cell: Conviction features three tiers of challenges: Execution challenges, which feature in-game goals for taking out enemies; Vanish challenges, goals for quickly disappearing after being spotted; and Splinter Cell challenges, for
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