Bulletstorm Walkthrough - Act 4 - Chapter 1: Part 2
2Full Walkthrough: http://www.gamefront.com/bulletstorm-walkthrough/
Head through the newly formed entrance and use the Dropkit to the left. Head into the building on the right and hop through the window on the other side. Turn left and take out the Skulls in the distance with your sniper.
Advance down the path and kill the next wave of Skulls around the bend. Head up the stairs and finish off the last few Skulls. After the doors explode, hold LT when prompted to.
After you are rudely greeted by a Confederate built robot, use your leash to whip up the nearby fireball and kick it toward him. Quickly make your way behind him and fire a few annihilator blasts at his backpack to destroy it.
Quickly move around to avoid his cannon blasts after he turns around. Keep moving as you fire a few more annihilator blasts at him. Once he bends down, run behind him and shoot another annihilator blast at the blue pack on his lower back to finish him off.
His cannon gun is anything to write home about, so you should probably carry on without it. Head through the entry way above the Employees Only sign.
Full Walkthrough: http://www.gamefront.com/bulletstorm-walkthrough/