Deus Ex: Human Revolution - Whispers of Conspiracy Walkthrough

Q: How to get YES BOSS achievement?

Back at Sarif Industries, check your email, then head to the penthouse to meet Taggart and Sandoval. Speak with Sarif for your next mission, then with Pritchard about a network security problem. Engage in a social battle with David Sarif to win the 'Yes Boss' achievement. Finally, read emails, speak to Pritchard again, and depart Detroit with Malik.

Q: Where to find P.E.P.S. AMMO in Of?

Back at Sarif Industries, check your email, then head to the penthouse to meet Taggart and Sandoval. Speak with Sarif for your next mission, then with Pritchard about a network security problem. Engage in a social battle with David Sarif to win the 'Yes Boss' achievement. Finally, read emails, speak to Pritchard again, and depart Detroit with Malik.

Q: How to talk to David Sarif?

Back at Sarif Industries, check your email, then head to the penthouse to meet Taggart and Sandoval. Speak with Sarif for your next mission, then with Pritchard about a network security problem. Engage in a social battle with David Sarif to win the 'Yes Boss' achievement. Finally, read emails, speak to Pritchard again, and depart Detroit with Malik.

Q: How to activate Acquaintances Forgotten Side Quest?

Back at Sarif Industries, check your email, then head to the penthouse to meet Taggart and Sandoval. Speak with Sarif for your next mission, then with Pritchard about a network security problem. Engage in a social battle with David Sarif to win the 'Yes Boss' achievement. Finally, read emails, speak to Pritchard again, and depart Detroit with Malik.

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Walkthrough

1
Return to Sarif Industries and go to your office. Check your email. Ignore Pritchard for now.
2
Optionally, re-explore the ventilation shaft in the southwestern lower area that leads to the Helipad. It now contains [P.E.P.S. AMMO] and [TRANQUILIZER AMMO].
3
Use the elevator in the main hall to go to the penthouse and meet William Taggart and his assistant Isaias Sandoval. Engage in dialogue to gather information.
4
Speak with David Sarif. This conversation grants [1000XP] and initiates your next mission.
5
Return to Jensen’s office and speak with Pritchard [1000XP]. He will inform you about a security issue in Sarif Industries’ network and ask you to speak with David about it.
6
Engage in a social battle with David Sarif. Pay attention to his personality type (Alpha) and carefully formulate your responses. The first answer should be 'Redirect'. Winning this conversation grants the YES BOSS achievement/trophy, [1000XP], and [SILVER TONGUE 1000XP].
7
Return to Jensen’s office and read all emails on his PC.
8
Speak to Pritchard outside the office. These steps are crucial for activating the 'Acquaintances Forgotten' side quest later.
9
Once you have fully explored Sarif Industries, purchased necessary items from Detroit shops, and explored the city, speak with Malik at the helipad to depart [1000XP]. Note that returning to Detroit later will have slight differences.

Tips

During the social battle with David Sarif, carefully listen to his responses and choose your dialogue options wisely. Staying on topic and using the 'Redirect' option early can be beneficial.
Ensure you check all emails and speak with Pritchard after the social battle to properly initiate the 'Acquaintances Forgotten' side quest.
The exploration of the ventilation shaft is optional but rewards you with valuable ammo.

1000XP (from Sarif)
1000XP (from Pritchard)
1000XP (from Malik)
YES BOSS achievement/trophy
SILVER TONGUE 1000XP
[P.E.P.S. AMMO]
[TRANQUILIZER AMMO]

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Whispers of conspiracy