Akademia is the last human city in the planet. Around it, a large wall protects its citizens. The enemy, however, is near and keep breaching our gates. Your job is to defend these gates, at all costs. If Akademia falls, the last humans falls with it.
In a distant future your job is to defend Akademia using a giant mech. Invaders are trying to reach the citadel, but you must prevent that from happening. Target your enemy and shoot. Don't let them destroy humanity.
Use the lower side buttons to call for resources (ammo and energy).
Target your enemy touching the triangle behind the mech and aiming. Your shots destroy enemies and their shots alike.
When being overwhelmed, use your EMP to blast the entire screen away.