Final Fantasy 7 Blowing Up Reactor No 1

We begin with Cloud and Barret's assault on the Shinra Reactor No. 1, a giant Mako reactor sucking life energy from their planet. With a good bit of level grinding, they prepare to assault the reactor, and fight off the giant robot guarding it. Defeating the robot, they retreat to the Sector 7 slums and Seventh Heaven, to meet up with Tifa.