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XCOM: Enemy Unknown Game Guide by gamepressure.com

XCOM: Enemy Unknown Game Guide

Table of Contents

Tech tree | Tech tree XCOM: Enemy Unknown Guide

Last update: 11 May 2016

In most cases, new research projects are unlocked after getting a new alien artifact (weapons, pieces of UFOs construction, alien bodies or living aliens), but some of them, such as the armor for soldiers, require the invention of the items. The following tech tree has been divided into several groups to facilitate the reading:

General and story-related technology

Project - Tech tree - XCOM: Enemy Unknown - Game Guide and Walkthrough

Project

Required project

Required Components

Results:

Experimental Warfare

 

 

Foundry

Phoenix Cannon

Alien Grenades (Foundry)

Weapon Fragments

 

5x Weapon Fragments

S.C.O.P.E.

S.C.O.P.E. Upgrade (Foundry)

Alien Materials

 

5x Weapon Fragments

Nano-Fiber Vest

UFO Power Source

 

1x UFO Power Source

building Elerium Generator

Xeno-Biology

 

4x Sectoid Corpses

Alien Containment Building

Arc Thrower

Xeno-Biology

10x Weapon Fragments

Arc Thrower

Outsider Shard

Xeno-Biology

 

Skeleton Key

Elerium

 

1x UFO Power Source, 10x Elerium

Improved Arc Thrower (Foundry)

Alien Nav Computer

 

2x UFO Flight Computers

Satellite Nexus building

Stealth Satellites (Foundry)

Hyperwave Communication

Alien Nav Computer

Hyperwave Beacon, Alloys 30x, 30x Elerium

building Hyperwave Relay

Ethereal Device

 

Psi-Link

Gollop Chamber building

Weapons

Project - Tech tree - XCOM: Enemy Unknown - Game Guide and Walkthrough

Project

Required project

Required Components

Results:

Beam Weapons

 

10x Weapon Fragments, 5x Alloys

Laser Pistol

Laser Rifle

Improved Pistol II (Foundry)

Heavy Lasers

Beam Weapons

Weapon Fragments 5x, 5x Alloys

Heavy Laser

Laser Cannon

SHIV laser (Foundry)

Precision Lasers

Beam Weapons

Weapon Fragments 5x, 5x Alloys

Scatter Laser

Laser Sniper

Plasma Pistol

 

Captured Plasma Pistol, 40x Weapon Fragments, 5x Elerium

Plasma Pistol

Improved Pistol III (Foundry)

Light Plasma Rifle

 

Captured Light Plasma Rifle, 40x Weapon Fragments, 10x Alloys, 5x Elerium

Light Plasma Rifle

Plasma Rifle

 

Captured Plasma Rifle, 40x Weapon Fragments, 10x Alloys, 5x Elerium

Plasma Rifle

Heavy Plasma

 

Captured Heavy Plasma Weapon, 40x Plasma Weapon Fragments, 10x Alloys, 10x Elerium

Heavy Plasma

Plasma SHIV (Foundry)

Plasma Sniper

Plasma Rifle / Heavy Plasma

50x Weapon Fragments, 10x Alloys, 10x Elerium

Plasma Sniper

Alloy Cannon

Plasma Rifle / Heavy Plasma

40x Weapon Fragments, 25x Alloys, 5x Elerium

Alloy Cannon

Guided Fusion Launcher

 

Captured UFO Battleship Class Fusion Core, 75x Weapon Fragments, Alloys 20x, 10x Elerium

Blaster Rocket Launcher

Armor

Project - Tech tree - XCOM: Enemy Unknown - Game Guide and Walkthrough

Project

Required project

Required Components

Results:

Carapace Armor

Alien Materials

10x Alloys

Carapace Armor

Alloy SHIV

Skeleton Suit

Carapace Armor

15x Alloys

Skeleton Suit

Titan Armor

Carapace Armor

15x Alloys, 5x Elerium

Titan Armor

Ghost Armor

Titan Armor, Hyperwave Communication

15x Alloys, 15x Elerium

Ghost Armor

Archangel Armor

Titan Armor, New Fighter Craft

15x Alloys, 15x Elerium

Archangel Armor

Dog Armor

Interrogation of an Ethereal or a Sectoid Commander

10x Alloys, 10x Elerium

Psi Armor

Fighters

Project - Tech tree - XCOM: Enemy Unknown - Game Guide and Walkthrough

Project

Required project

Required Components

Results:

Experimental Warfare

 

5x Weapon Fragments

Phoenix Cannon

Heavy Lasers

Beam Weapons

5x Weapon Fragments, 5x Alloys

Laser Cannon

Plasma Cannon

Light Plasma Rifle

30x Weapon Fragments, 10x Elerium

Plasma Cannon

New Fighter Craft

Alien Navigation Computer, UFO Power Source

75x Weapon Fragments, 10x Alloys, 10x Elerium

Fighter Firestorm

Hover SHIV

EMP Cannon

New Fighter Craft, Plasma Cannon

20x Elerium

EMP Cannon

Interrogations and autopsies

Alien - Tech tree - XCOM: Enemy Unknown - Game Guide and Walkthrough

Alien

Autopsy

Interrogation

Sectoid

Targeting Uplink (fighters)

credit: Beam Weapon

Floater

Defense Matrix (fighters)

credit: Armor Research

Thin Man

Improved Medikit (Foundry)

credit: UFO Technology

Muton

Ammo Conservation (Foundry)

credit: Plasma Weapon

Chryssalid

Chitin Plating

 

Heavy Floater

Advanced Repair (Foundry)

credit: Flight

Commander Sectoid

Psi Lab

credit: Psionics, required for Psi Armor

Elite Muton

credit: Plasma Weapon

credit: All Weapon Tech

Berserker Muton

Combat Stims

credit: Armor Research

Drone

Drone Capture (Foundry)

 

Cyberdisc

UFO Tracking (fighters)

 

Ethereal

Mind Shield

credit: All Tech, required for Psi Armor

Sectopod

Advanced Construction (Foundry)

 

Foundry

Project - Tech tree - XCOM: Enemy Unknown - Game Guide and Walkthrough

Project

Required Components

Results:

Heavy Weapons Platform

5x Engineers

S.H.I.V.

Alien Grenades

Captured Alien Grenade, 20x Engineers, 20x Weapon Fragments, 25x Alloys, 10x Elerium

Alien Grenades

Improved Medikit

15x Engineers, 20x Weapon Fragments, 4x Thin Man corpses

Medikit heals 50% more life points

Improved Arc Thrower

10x Engineers, 20x Weapon Fragments, Alloys 20x, 20x Elerium, 4x Drone wrecks

Arc Thrower has a better chance to stun foreign

Advanced Repair

20x Engineers, 30x Alloys, 10x Elerium, 4x Heavy Floater corpses

Reduces repair time fighters and S.H.I.V.

S.H.I.V. Laser

10x Engineers, 15x Weapon Fragments, 30x Alloys

S.H.I.V. is armed with a laser gun

Plasma S.H.I.V.

20x Engineers, 30x Weapon Fragments, 45x Alloys, 30x Elerium

S.H.I.V. is armed with a plasma gun

S.H.I.V. Repair

10x Engineers, 15x Alloys, 15x Elerium

Arc Thrower can repair the S.H.I.V. rover

S.H.I.V. Suppression

15x Engineers

S.H.I.V. can cause suppression fire

Drone Capture

10x Engineers, 20x Weapon Fragments, 4x Drone wrecks

Arc Thrower can take control of the Drone

Ammo Conservation

15x Engineers, 20x Weapon Fragments, Alloys 90x, 6x Muton corpses

Each weapon has more ammo

Advanced Construction

30x Engineers, 20x Weapon Fragments, Alloys 50x, 30x Elerium, 2x Sectopod corpses

Faster installation and construction vehicles

Advanced Flight

25x Engineers, 50x Alloys, 50x Elerium

Longer duration of floating in the air for S.H.I.V Hover and Archangel Armor

Improved Pistol I

5x Engineers, 5x Weapon Fragments

The increased critical strike chance for all guns

Improved Pistol II

10x Engineers, 25x Weapon Fragments, 20x Alloys

Increased accuracy of all guns

Improved Pistol III

20x Engineers, 50x Weapon Fragments, 10x Alloys, 10x Elerium

Increased maximum damage of all guns

Stealth Satellites

20x Engineers Alloys 20x, 20x Elerium, 3x UFO Flight Computers

Reduced chance of satellite detection by UFO

S.C.O.P.E. Upgrade

10x Engineers, 15x Weapon Fragments

Increased critical strike chance for SCOPE

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