- 2K Marin
- A.P. Rounds (XCOM: Chimera Squad)
- A.P. Rounds (XCOM 2)
- ADVENT
- ADVENT Datapad Decryption
- ADVENT General
- ADVENT Heavy Artillery Cannon
- ADVENT MEC
- ADVENT MEC Breakdown
- ADVENT MEC Wreck
- ADVENT Network Tower Assault
- ADVENT Officer
- ADVENT Officer Autopsy
- ADVENT Officer Corpse
- ADVENT Priest
- ADVENT Priest Autopsy
- ADVENT Priest Corpse
- ADVENT Purifier
- ADVENT Purifier Autopsy
- ADVENT Purifier Corpse
- ADVENT Retaliation
- ADVENT Security Tower
- ADVENT Shieldbearer
- ADVENT Shieldbearer Autopsy
- ADVENT Shieldbearer Corpse
- ADVENT Stun Lancer
- ADVENT Stun Lancer Autopsy
- ADVENT Stun Lancer Corpse
- ADVENT Trooper
- ADVENT Trooper Autopsy
- ADVENT Trooper Corpse
- ADVENT Turret
- ADVENT Turret Breakdown
- ADVENT Turret Wreck
- AK-47
- Abductor
- Ability Points
- Absolutely Critical
- Absorption Fields
- Access Lift
- Achievements
- Achievements (The Bureau: XCOM Declassified)
- Achievements (XCOM: Chimera Squad)
- Achievements (XCOM: Enemy Unknown)
- Achievements (XCOM 2)
- Acid Bomb
- Acid Bomb (XCOM 2)
- Acid Bomb (XCOM 2 Alien Ability)
- Acid Burn
- Acid Grenade (XCOM: Chimera Squad)
- Acid Grenade (XCOM 2)
- Adaptive Bone Marrow
- Adhesion Grenade
- Adrenal Neurosympathy
- Advanced Construction
- Advanced Explosives
- Advanced Fire Control
- Advanced Flight
- Advanced Grenade Launcher (XCOM 2)
- Advanced Psi Amp
- Advanced Repair
- Advanced Servomotors
- Advanced Warfare Center
- Agent
- Agent (XCOM: Chimera Squad)
- Aggression
- Aim
- Air and Space
- Aircraft armaments (XCOM: Enemy Unknown)
- Alien
- Alien Abductions
- Alien Alloys
- Alien Alloys (XCOM 2)
- Alien Base
- Alien Base Assault
- Alien Biotech
- Alien Containment
- Alien Data Cache
- Alien Data Cache Decryption
- Alien Encryption
- Alien Entertainment
- Alien Entertainment (Damaged)
- Alien Facility
- Alien Facility Assault (XCOM 2)
- Alien Food
- Alien Food (Damaged)
- Alien Fortress Assault
- Alien Grenade
- Alien Grenades
- Alien Hunters
- Alien Materials
- Alien Nav Computer
- Alien Psi Amp
- Alien Rulers
- Alien Stasis Tank
- Alien Stasis Tank (Damaged)
- Alien Surgery
- Alien Surgery (Damaged)
- Aliens
- Aliens (The Bureau: XCOM Declassified)
- Aliens (XCOM: Chimera Squad)
- Aliens (XCOM: Enemy Unknown)
- Aliens (XCOM 2)
- All In
- Alloy Cannon
- Alloy Cannon (Project)
- Alloy Cannon (weapon)
- Alloy S.H.I.V.
- Ammo Conservation
- Ana Ramirez
- Anarchy's Children
- Andromedon (XCOM 2)
- Andromedon Autopsy
- Andromedon Cannon
- Andromedon Wreck
- Angela Weaver
- Anna Sing
- Annette Durand
- Arashi
- Arc Blade
- Arc Thrower
- Arc Thrower (Project)
- Arc Thrower (item)
- Archangel Armor (Project)
- Archangel Armor (armor)
- Archon (XCOM 2)
- Archon Autopsy
- Archon Corpse
- Archon King (XCOM 2)
- Archon King Autopsy
- Archon King Corpse
- Armors (XCOM 2)
- Armory
- Asaru
- Assassin Weapons
- Assault Class
- Assault Rifle
- Assault Rifle (XCOM: Enemy Unknown)
- Assault Rifle (XCOM 2)
- Assembly
- Asset Recovery
- Automated Threat Assessment
- Autopistol
- Avalanche Missiles
- Avatar (XCOM 2)
- Avatar Autopsy
- Avatar Corpse
- Avatar Project
- Avenger
- Avenger (The Bureau: XCOM Declassified)
- Avenger (XCOM 2)
- Avenger Defense
- Avenger Defense (War of the Chosen)
- Axiom
- Axis
- Backpacks (The Bureau: XCOM Declassified)
- Balanced Classic Difficulty Strategy Guide
- Bar/Memorial
- Base Augments
- Battle Focus
- Battle Frenzy
- Battle Scanner
- Battle Scanner (XCOM: Enemy Unknown)
- Battle Scanner (XCOM 2)
- Battlefield Medicine
- Battleship
- Beam Autopistol
- Beam Cannon
- Beam Cannon (Research)
- Beam Pistol
- Beam Weapons
- Beam Weapons (research)
- Beam Weapons (weapon)
- Bellus Mar
- Berserker
- Berserker (XCOM: Enemy Unknown)
- Berserker (XCOM 2)
- Berserker Autopsy
- Berserker Autopsy (XCOM 2)
- Berserker Corpse
- Berserker Corpse (XCOM 2)
- Berserker Queen (XCOM 2)
- Berserker Queen Autopsy
- Berserker Queen Corpse
- Bind and Crush
- Bioelectric Skin
- Black Market
- Blacksite Vial
- Blaster Launcher
- Blaster Launcher (The Bureau: XCOM Declassified)
- Blaster Launcher (XCOM: Enemy Unknown)
- Blaster Launcher (XCOM 2)
- Blazing Pinions
- Blood Call
- Bloodlust
- Blueblood
- Bluescreen Protocol
- Bluescreen Rounds (XCOM: Chimera Squad)
- Bluescreen Rounds (XCOM 2)
- Body Armor
- Body Shield
- Body armors (XCOM: Enemy Unknown)
- Bolt Caster
- Bomb Disposal
- Bombard
- Bonding
- Bonuses and Penalties
- Breakthroughs and Inspirations
- Bridge
- Bring Em On
- Bull Rush
- Bullet Swarm
- Burning
- Burrow
- Cannon
- Cannon Fire
- Captain (rank)
- Carapace Armor
- Carapace Armor (Project)
- Carapace Armor (armor)
- Caustic Rounds
- Cave Excavation
- Cease Fire Grenade (XCOM: Chimera Squad)
- Celestial Gauntlets
- Central's Archives
- Central Officer Bradford
- Cherub
- Chief Lily Shen
- Chimera Squad
- Chitin Plating
- Chryssalid
- Chryssalid (XCOM 2)
- Chryssalid Autopsy
- Chryssalid Autopsy (XCOM 2)
- Chryssalid Corpse
- Chryssalid Corpse (XCOM: Enemy Unknown)
- Chryssalid Corpse (XCOM 2)
- Chryssalid Poison (Ability)
- Chryssalid Poison (Status Effect)
- Chryssalid Slash
- City 31
- Class Ability Comparisons
- Class Builds
- Claymore
- Claymore (XCOM 2)
- Clone
- Close Combat Specialist
- Close and Personal
- Cluster Bomb
- Codex (XCOM 2)
- Codex Brain
- Codex Brain (Shadow Project)
- Collateral Damage
- Colonel (rank)
- Combat Drugs
- Combat Intelligence
- Combat Stims
- Commander
- Commander's Quarters
- Commando Class
- Conceal (perk) (XCOM 2)
- Concealment
- Confounding Light
- Continent Bonus (XCOM 2)
- Conventional Weapons
- Conventional Weapons (XCOM 2)
- Corporal (rank)
- Council Missions
- Council Missions (XCOM 2)
- Cover
- Covering Fire
- Covert Actions
- Covert Data Recovery
- Covert Extraction
- Covert Operations
- Covert Operative
- Critical hit
- Custodian Xel and Crew Chief Yarvo
- Cyberdisc
- Cyberdisc Autopsy
- Cyberdisc Wreck
- Cybernetics Lab
- Damage Control
- Damn Good Ground
- Danger Zone
- Dark Events
- Dark Events (XCOM: Chimera Squad)
- Dark Events management
- Darkclaw
- Darklance
- Data Tables
- Dazed
- Death (XCOM 2)
- Death Blossom
- Deep Pockets
- Defense
- Defense Matrix (Dodge)
- Defense Matrix (XCOM 2)
- Deluge
- Dense Smoke
- Depth Perception
- Devastating Blow
- Disabling Shot
- Disoriented
- Dispatch Missions (The Bureau: XCOM Declassified)
- Disrupt
- Disruptor Rifle
- Distortion Field
- Double Tap
- Dr. Alan Weir
- Dr. Heinrich Dresner
- Dr. Raymond Shen
- Dr. Richard Tygan
- Dr. Vahlen
- Dragon Rounds (XCOM: Chimera Squad)
- Dragon Rounds (XCOM 2)
- Drone
- Drone (The Bureau: XCOM Declassified)
- Drone (XCOM: Enemy Unknown)
- Drone Autopsy
- Drone Capture
- Drone Wreck
- Drop Pod (The Bureau: XCOM Declassified)
- E.X.O. Suit
- E.X.O. Suit Project (XCOM 2)
- EMP Bomb (XCOM 2)
- EMP Cannon (Project)
- EMP Cannon (weapon)
- EMP Grenade (XCOM 2)
- EXALT
- EXALT Assault Rifle
- EXALT Base Raid
- EXALT Elite Heavy
- EXALT Elite Medic
- EXALT Elite Operative
- EXALT Elite Sniper
- EXALT Heavy
- EXALT Heavy Laser
- EXALT Intel
- EXALT LMG
- EXALT Laser Assault Rifle
- EXALT Laser Sniper Rifle
- EXALT Medic
- EXALT Operative
- EXALT Rocket Launcher
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