Here is an overview of the game, via its Steam page:
Save a world without hope.
Year 2040. An action third-person shooter where you become one of the Earth Defense Force soldiers and fight against the invaders from outer space which ruined the world. In a world settings that differs from the original Earth Defense Force series, more than 50 missions in five difficulties await for your challenge.
- 50-Plus Missions in Five Difficulties – The furious battle against the invading Aggressors is full of chaos. Includes 50-plus severe missions, where you must fight against gigantic enemy creatures and huge invader weapons in five different difficulties.
- Four Mobile Soldiers and Weapons – You will become the legendary mobile soldier which controls four different PA Gears, and several hundreds weapons, arms, and items. Regain hope to human beings.
- Bring Personality to the Battlefield – Includes character creation mode. You can select your favorite gender, face, hair style, weight, voice, and outfit. You can also change your personality.
- Enriched Offline and Online Modes – When playing in offline mode, split-screen is supported. Also, when playing in online mode, you can play cooperatively with other Earth Defense Force members around the world.
Watch a trailer for the PC version below.