Breaching the Prison

You'll begin by breaching the exterior defenses of Nova Prospekt. This involves using your Antlion army to overwhelm the initial Combine patrols. Once inside, the environment shifts to claustrophobic prison corridors. You'll encounter heavily armed Combine Soldiers, including Shotgunners and Elite Soldiers. Ammunition and health are still important, so scavenge thoroughly. Use the Gravity Gun to disarm turrets or throw explosive objects. You'll need to navigate through various cell blocks, control rooms, and maintenance areas, often solving small environmental puzzles to progress.