This is a full playthrough of a level I created called "Autonomous". "Autonomous" was created using the Half-Life 2: Episode 2 Source engine. "Autonomous" introduces entirely new tower defense mechanics to the standard Half-Life 2 formula. In this level, players play as a Combine soldier who must survive five increasingly difficult waves of zombies. These zombies are drawn to the power signature of a teleporter that the solider must protect at all costs. Luckily, players can gather resources throughout the map each wave to summon three different kinds of defensive units to help fend off the zombie horde.

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