Alpha Protocol

  Xbox 360   After assaulting Brayko's mansion and learning of Surkov's deceit, you will get a mission to infiltrate his dummy corporation in order to find him. You will automatically engage in conversation with him once you have reached a certain point in the mission. At this point, choose the negatives responses (one may be a professional stance) to provoke him into ordering his bodyguard to attack you. Alternately, select the attack option outright to ensure you get to have the opportunity to kill him. Continue the mission until you are outside. Another automatic conversation with Surkov will begin. Choose the execute option during the conversation to earn the achievement or trophy.

  Xbox 360   You must befriend any character that gives you the dialog option to execute (Surkov, Parker, SIE, Omen Deng, and Albatross). Then, at the end of the game you must agree to join Halbec. After you defeat Yancy, betray Leland.

  Xbox 360  

• In order to get Marburg to fight to the death in Rome, your reputation with him must be at -6 (Animosity) or lower. You must also goad him during the final conversation of the encounter with the "suave" conversation options.
• Use suave and taunt stances with him, kill people on your missions, and choose to save Madison in the museum. When fighting him in the museum, choose the taunt stances. Being friends with Sie will also result in a -2 to your reputation with him.
• Choose mostly suave stances in dialogs from the start of the game, especially with Marburg. Keep selecting suave stances during and after the fight to provoke him into continuing. If you do not kill him there, collect Marburg's and Parker's dossiers to unlock a new option during the last mission and fight him in the server room.
• Let Marburg go in Rome and get Madison's secret fact. Contact Parker in the Graybox to make him and Marburg shoot each other. You can then finish off Marburg, however if you kill him in Rome you will get his pistol.

Get the pistol up to the advanced Chain Shot level. When a Boss sticks their head out, do a five shot Chain Shot to kill it instantly.

Get a high reputation with Leland using primarily professional responses when talking to him. Before the final mission, accept his offer to join Halbech as chief of security. Westridge will then be your enemy in the final fight.

You can unlock these by pursuing the romances with the women in the game.

The first few dialogues with her should be professional. Once in your safe house start using the suave responses. Choose her as your handler at the mansion. When she offers to bandage you up, accept. When she goes to bed, check in on her.

Mina likes professional responses. Do not kill innocents, police, or operatives during missions.

When talking to her, keep the responses professional for the most points. When you find intel and get an email from yourself that you can send to Halbech, Blackmarket, or Scarlet, you get a +1 to your reputation for each one sent to Scarlet. You can romance her during "Contact Scarlet" mission.

Sie likes the aggressive stance and you killing people. Also choose her as your handler at every opportunity.