BACKGROUND LORE

"Having failed in their mission to defend the prison and teleporter prototype, causing it’s complete destruction, the Nova Prospekt Unit became effectively homeless. While there were initial calls for them to be liquidated for their failure, it was deemed more suitable that they be split apart into several detachments and be moved to different Sectors. Their affinity for defensive warfare and close-quarters combat due to the nature of their former home-base turned them from mere jailors into specialist units. 

Now they serve as the Universal Union’s heavy attack force and military police, channelling their former skills into situations both on and off of the battlefield. An especially useful trait for the Sector 61 Overwatch Expeditionary force considering the nature of their units.

The Nova Prospekt Detachment endured more rigorous hormonal adjustment and augmentation, allowing for more versatility, survivability, and aggression. These harsher augmentations have allowed these units to carve out a defining force within the Combine faction, and are now some of the most feared units within the UU."

• Official CvR Lore Document

HOW TO COUNTER

• A SENTRY's forcefield has 4000HP and lasts 30 seconds. It is also nocollided, meaning they'll be able to peak out, shoot you and return to safety whenever they please. It's advised to pay close attention to their movement so that you may be able to shoot them back when they peek out

• SENTRY has arguably one of the best LMGs in the game, meaning that if they are in a fortified position, it is best just to find a way around to flank them and catch them off guard

• If a SENTRY is not in a fortified position, then it is best to engage them at longer range where the recoil of the LMG is most noticeable, or at extremely close range so that they must work harder to track you