Level 7: InvasionThe year is 2020. The world hovers on the brink of annihilation. Preceded by a devastating orbital attack, a warlike alien race known as the Hydra has besieged the planet, their invasion force carried on enormous drop ships that dwarf city blocks and rain devastation from above. The Hydras ultimate goal is to eradicate the last survivors of their ancient nemesis, the Ghin, an alien race that has taken refuge on Earth. Humanity is caught in the