Metropolice

Overview
Metropolice or Metrocops are the basic human force of the Combine. They compose of ordinary humans that have volunteered themselves to join with the Combine force, for various reasons. They are some of the first enemies that the player will encounter.

At first, Metrocops are armed with the basic USP Match or Stunstick. They aren't usually too dangerous with these weapons, though the USP wielders can often fire quickly to harass the player, and Stunstick wielders can do quite a lot of damage if they hit the player when they have no armor.

Later on, they begin appearing with various SMGs such as the MP7, MP40, or more rarely, the Grease Gun.

They briefly stop appearing after the player escapes the Canals and makes it to Eli's Lab, reappearing rarely in chapters such as Highway 17.

They become common again once the player returns to City 17 in Anticitizen One and Follow Freeman, but they dissappear again once the chapter 'Our Benefactors' is reached.

Behavior
Metrocops operate in a fairly basic way: they cover each other in firefights, often stand still to shoot the player, reloading occasionally. On some occasions, they can appear with Manhacks strapped to their backs, which they will deploy once they see an enemy unless dispatched immediately beforehand.

Metrocops have a decently high chance to spawn with Riot Gear, except on Easy mode. Riot Gear becomes absurdly common in Nightmare mode, where nearly every single Metrocop will spawn with at least one piece of Gear.

Augmented Metrocops are no easy targets at first, and are by far the most dangerous threats the player can encounter early game, even if the player pulls off headshots a lot. Augmented Metrocops also become far more common the higher the player's difficulty level is, from being decently rare on Normal, to becoming simply uncommon in Nightmare.

Tactics
-Metrocops aren't massive threats by default due to their low health. One or two headshots from nearly any weapon is enough to put them down.

-When dealing with Augmented Metrocops, headshots become mandatory due to their hefty amounts of HP, especially if they are a Blue variant. Try using stronger weapons like the Desert Eagle or Grease Gun.

-If an Augmented Metrocop spawns with a Riot Gear helmet, don't try going for the body, it usually will fail. Break his helmet and constantly shoot his head.

-When dealing with groups of Cops, SMGs or the CZ52 will put them down fairly easily if they aren't Augmented or protected.