During this, the red light on the Manhack turns orange and the machine emits a high-pitched warning signal a second blow would be lethal to it. Attacking a Manhack with a Crowbar or pushing it with the Gravity Gun causes it to become disoriented and lose interest in its target for a few moments as it re-stabilizes itself. Manhacks appear to have some resistance to gunfire, and are more easily destroyed when being smashed with a hard object. Additionally, Combine Ordinals and some Civil Protection officers could carry up to two Manhacks on them, which they could deploy in battle. Thanks to their small size, they can enter confined spaces usually inaccessible to other units, such as narrow alleyways, sewers, and small passages, where they are especially deadly. Manhacks never travel alone and are usually deployed in groups of four or more they are sometimes accompanied by other Combine troops. While attacking a target, they will sometimes open their casing in a claw-like fashion. Manhacks are programmed with very little concept of self-preservation, careening off walls and through objects in their single-minded pursuit of their target, often damaging itself upon collision. They are are powerful enough to cut and break through wooden obstacles, although not through stronger materials such as metal or concrete. The blades produce a high-pitched whirring sound when spinning, which indicates a Manhack's proximity. It also has gyroscopic sensors to steady itself in the air. The Manhack's most prominent feature is its three razor-sharp, high-speed spinning blades which it uses for propulsion and as weapons.

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