Complete the following achievements to unlock Xbox Live Gamerscore points. 

Achievement                        How to unlock
------------------------------------------------------------
Alpha Protocol (75 points)       - Complete Operation Desert Spear.
Antisocial (10 points)           - Get 3 people to hate you. 
                                   (who must all hate you at the same time). 
Basic Training (50 points)       - Complete the Training Mission.
Black Belt (5 points)            - Defeat 50 enemies with CQC.
Breaking and Entering (5 points) - Pick 10 locks.
Building a Deadlier Mousetrap    - Have 100 placed devices detonate.
Circuit Breaker (5 points)       - Bypass 20 electronic devices.
Data Theft (5 points)            - Hack 10 computers.
Desert Spear (25 points)         - Assassinate Sheikh Shaheed.
Evolution of an Action Hero      - Complete the Alpha Protocol using the Recruit 
                                   background.
Full Circle (125 points)         - Complete Alpha Protocol.
Hard to Read (10 points)         - Use each stance at least 25% across 90 dialogue 
                                   stance choices.
Hardcore (25 points)             - Complete Alpha Protocol on Hard difficulty setting.
Judge, Jury, and Executioner     - Let your gun do the talking.
Ladies' Man (10 points)          - Romance all the ladies in Alpha Protocol in a single 
                                   career.
Lurker (5 points)                - Evade or Takedown 75 enemies across your career.
No Time For Love (20 points)     - Complete the game without being seduced.
One With The Shadows (5 points)  - Complete 3 missions with less than 5 kills and with 
                                   no enemies 
                                   alerted to your presence. 
Operation Blood Feud (75 points) - Complete Operation Blood Feud.
Operation Deus Vult (75 points)  - Complete Operation Deus Vult.
Operation True Heirs (75 points) - Complete Operation True Heirs.
Pistol Mastery (5 points)        - Score 100 Critical Hits with the Pistol.
Ready For Anything (5 points)    - Acquire the vast majority of Intel.
SMG Havoc (5 points)             - Achieve the maximum SMG Critical Hit Multiplier 7 times
                                   in your career.
Shotgun Crowd Control (5 points) - Score 100 Critical Hits with the Shotgun.
Social Butterfly (10 points)     - Gain Liked reputation status of 3 people. 
                                   (who must all Like you at the same time). 
Technophile (5 points)           - Complete 5 missions wherein 6 different gadgets are used.
Thorton, Inc. (10 points)        - Turn all your enemies into allies in one single career.