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Part 4
XCOM: Enemy Within

Part 4

Learn how to build facilities, manage research, and deploy satellites effectively in XCOM: Enemy Within. Optimize your base for late-game success and alien interception.

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Learn how to build facilities, manage research, and deploy satellites effectively in XCOM: Enemy Within. Optimize your base for late-game success and alien interception.

Walkthrough
  1. 1
    Upon entering the base menu, click the Engineering button and then 'Build Facilities'.
  2. 2
    Designate one side of your base for Satellite Uplinks. Build an Access Lift and start excavating.
  3. 3
    Aim for a 3-floor base, placing similar facilities together for bonuses. Build a Satellite Uplink next to your existing one and queue up 2-3 extra satellites.
  4. 4
    Build Power Generators on the side of the base not used for Satellite Uplinks. This area should also house the Officer Training School, Cybernetics Lab, or Gene Mod Labs.
  5. 5
    To start research, click 'Research' and select 'Start New Research Project'. Prioritize Weapon Fragments for better weapons.
  6. 6
    Researching Weapon Fragments unlocks Experimental Warfare and potentially plasma weapons if you capture UFO components.
  7. 7
    It's generally not recommended to research Xeno-biology early as plasma pistols are weak. Interrogation for tech credits is only worthwhile with the South America continent bonus.
  8. 8
    Wait until Mutons are common before capturing aliens for research. Capturing Muton Elites can provide advanced plasma weapons.
  9. 9
    Once facilities are built, soldiers recruited (sparingly), and research is set, click the globe and then 'Scan'. This will trigger various missions or events.
  10. 10
    For UFO Interception, basic interceptors with missiles are sufficient early on. Later, one interceptor with a laser cannon can handle most UFOs except battleships.
Tips
  • Building similar facilities adjacent to each other provides bonuses.
  • Satellite Uplinks are limited by power and available engineers.
  • Don't demolish buildings unnecessarily.
  • Focus on base expansion and satellites over soldier upgrades unless absolutely necessary.
  • Sell captured UFO power sources and flight computers for cash early on.
  • Researching weapons is generally more beneficial than increasing soldier HP due to the combat system.
  • Capturing live aliens is more rewarding later in the game when stronger plasma weapons are available.
  • Keep one or two basic interceptors on each continent for defense.

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