The ADVENT Turret is a robotic turret found mounted to ADVENT vehicles and facilities. It is primarily black and red colored, with a flashing electronic display along its barrel. The entire assembly is mounted on a circular, rotating mount. It is a stationary defense turret used to defend an area and to support ADVENT units. However, the unit is highly vulnerable to hacking by upgraded Gremlin drones; this allows XCOM to either temporarily shut it down or take control of the turrets and turn them on their ADVENT allies. Additionally; when successfully hacked during concealment the action does not reveal the XCOM operatives, and even if the operatives are later detected the turret isn't, potentially allowing the device to be ordered to spring a trap from an unexpected area. The weapon has a good degree of armor; reducing the impact of XCOM attacks and this armor along with the turrets health only grows stronger as ADVENT deploy more advanced versions of the turret. Said armor is vulnerable to shredding however.
The ADVENT Turret, like other ADVENT units, fires glowing red Gauss rounds from its barrel. It does comparable damage to an ADVENT magnetic rifle and due to its frequently elevated positions it may gain a bonus to its accuracy against a target, making it a very deadly Overwatch interceptor. Additionally, ADVENT Turrets can fire twice in one turn; while the AI sometimes does not do this, a hacked turret only uses one action point to fire. If Vipers are near a turret, a bound soldier counts as exposed and can still be targeted without harming the Viper; ADVENT Turrets can do up to 8 critical damage in this situation.
Turrets are upgraded to Heavy Turrets in mid-May (mid-June on Legend) and to Superheavy Turrets in mid-July (mid-September on Legend).
Note that in the Shen's Last Gift DLC, a specific variety of turrets appear: Decaying Turrets. These turrets are old, rusted, and appear heavily damaged. As a result, they only have 4 HP and a single armor point compared to the 2+ of a standard Turret. They may also pop up from floor panels.
- Mechanized: This unit is immune to fire, poison, flash and stuns.
- Double Tap: Allow both action to be used to fire the main weapon. Since the turret cannot move, it shoots twice per turn or can shoot once then enter Overwatch mode.
- As mechanized units, ADVENT Turrets are vulnerable to the Specialist's Haywire Protocol which allows the player to temporarily deactivate or take control of them. Their low Tech stat compared to other robots makes them particularly good hacking targets. A Specialist's Gremlin drone may remotely hack turrets.
- Haywire Protocol has Squadsight. Provided the Specialist has line of sight to the turret, a Ranger with Phantom can be placed within firing range of the turret to allow hacking from a safe distance.
- EMP weaponry such as EMP grenades and Bluescreen Rounds are devastating versus turrets, as with other robots.
- ADVENT Turrets are frequently located in elevated positions which can give them good fields of fire but leaves them exposed and easy to attack. Destroying the floor beneath a turret is a good way to eliminate its height advantage and field of fire plus the damage may instantly kill it.