https://www.youtube.com/watch?v=6-KW5HWThQcFollowing my achievement walkthrough video guide you will get all achievements and the 1000/1000 gamerscore in 5 minutes ! Timestamps aren't necessary since you need to complete all challenges (achievements) in a single playthrough anyway for the Mastermind achievement (one of the challenges being to beat the game in 5 minutes or less
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