The War Machine section is an On-Rails shooter on the Arkeyan Armory level, the War Machine has 2 attacks, a ranged one and its fists, there are only 2 types of enemies on this section, the small helicopter-like creatures which are hard to hit using the ranged weapon and the Arkeyan Construct wish is easier to hit due to their large size, this section of the level has plenty of enemies and getting 30 should be a breeze, use the fists against the flying enemies as it has more wide hit-zone and against the Constructs use the Ranged attacks.