How to complete the 'Order/Chaos' priority contract in Marathon

The "Order/Chaos" priority contract in Marathon is handed to you by Gantry, leader of MIDA, after you finish the previous quest. It’s tougher than many contracts because it must be completed in a single run and sends you across Dire Marsh, Marathon’s second and more dangerous map.

The contract has three steps you must complete in order: trigger alarms in south Complex by hacking a terminal, acquire Security Commander credentials, and download data from a terminal inside south Maintenance. To trigger the alarms, head to the southern section of Complex — the easternmost point of interest on Dire Marsh.

The terminal sits on the ground floor inside an office just below the "COM" text on the in-game map; the exterior walls are yellow and there’s large "CPLX-3" lettering above the upper walkway. Interacting with this terminal calls in UESC reinforcements, including the Security Commander.

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