Here is a general Guide for Artificial Extinction the game. we will add more information later.
Sentry Types

Sniper Sentry
Ground Units
Upgrade 1: Armor Piercing Rounds
Upgrade 2: Double Rate of Fire
Upgrade 2: Double Rate of Fire

Anti- Air Sentry
Flying Units, Missiles, Timed Bombs.
Upgrade 1: Heat Seaking Launcher
Upgrade 2: Another Heat Seaking Launcher
Upgrade 2: Another Heat Seaking Launcher

Gun Sentry
Close Quarters ground units
Upgrade 1: Double rate of fire
Upgrade 2: Double ammo Capacity
Upgrade 2: Double ammo Capacity

MLRS
Ground Units, Air Units.
No upgrades, 1 time use.

Missile Dome
missiles
No upgrades, 1 time use.
Resources
Image
Resource
Needed for
Max Miners

Fuel
Main mission Ship
1

Energy
Placing Sentries
Unlimited

Steel
Placing Sentries, Repairing them & Buying Ammo.
5
Abilities & Weapons
Drone
Can Repair Sentries
Airstrike
Calls in your ship for an airstrike ( 1 use )
CyberAttack
Hack an enemy unit to aid you ( 5 uses )

Sniper
Long & Close range attacks.

Claymore
Explodes when ground unit comes close.

Rocket Launcher
Lock on attack for Ground / Air units.
Enemies

Spider Tank
Long range Gun
Sniper Turret / MLRS

UAV
Distracts Sentries
AA Sentry / MLRS

UAV Shooting
Close Quarters Gun
AA Sentry / MLRS

Bomber
Drops bombs in a row, medium damage
MLRS / Rocket Launcher

Heavy Bomber
Drops a Timed bomb with heavy damage
AA Sentry to destroy the bombs / MLRS / Rocket Launcher

Spider Missile Tank
Shoots a long range missile at your base.
Missile Dome / AA Sentry to destroy the missiles. Use a rocket launcher to destroy the tank.
Tips
- Get to 5 steel miners as fast as you can.
- Don’t place Sentries to close to each other.
- Use you Airstrike Ability before reaching 90% Fuel.
- Listen to your buddy on where bombers come from, shoot them down before they can hurt you or your sentries!