Sentry
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Introduction
The Sentry is a Marine structure that automatically targets and fires upon any aliens in its line of sight.
Sentry Battery
The Sentry Battery is required for Sentries to function, without it they will be inactive until one is placed nearby.
Player - Marine (Assault Rifle • Pistol • Switch-Axe)
Purchases - Mine • Shotgun • Welder • Hand Grenades • Grenade Launcher • Flamethrower • Machine Gun • Jetpack • Exosuit
Mechanics - Marine Commander • Power Nodes • Resource Model
Abilities - Ammo Pack • Med Pack • Nano-shield • Scan • Power Surge • Catalyst Pack • Distress Beacon • Recycle
Build - Command Station • Extractor • Infantry Portal • Armory • Robotics Factory (ARC • MAC) • Arms Lab
Advanced - Sentry • Sentry Battery • Observatory • Phase Gate • Prototype Lab