Atrium | Halvo Bay Military Academy GoW: Judgment Guide

There is a declassified mission symbol on the wall in front of you. After accepting it your only weapon will be pistol. You can pick up the sentinel located right from the statue in the middle of the room - place it at the robot when you have time. In order to accomplish stage with three stars, place the sentinel with its back towards the entrance from which enemies will be attacking you, so it will kill only enemies appearing the robot. Try to kill all enemies who get close in a melee fight, saving ammo for Boomers. There is ammo crate left from the statue - use it when needed. (Note! The fight can start with attack of Wretches or standard opponents sliding down on lines. In my case I got three stars in the second attack option).

Before leaving atrium go to the room on the right - you'll find there COG tag behind the door. While following your mission objective you'll find also a Tripwire Crossbow lying on crates, which can be useful in the next stage.