Bulletstorm Walkthrough - Act 3 - Chapter 1: Part 2
Full Walkthrough: http://www.gamefront.com/bulletstorm-walkthrough/
Pick up any sniper nearby sniper ammo, then head through the northwest entrance of the building. After you make your way through the building you'll find a Dropkit before you exit back outside.
When you do step outside, immediately take cover behind one of the nearby boxes. Use your sniper to take out the enemies occupying the tower. Once you clear it out, follow Ishi to the tower.
Don't put that sniper away just yet! Cover Ishi while he does his work by sniping all enemies on the other side of the bay. There's a lot of them, so make sure you have a good view and ample cover.
Once Ishi gets the first half of the drawbridge down, use your leash to pull down the other half and cross over to the other side. Log into the Dropkit over to the left side if you need to.
Take out the enemies hiding behind the crates as you head downstairs. More enemies will be waiting for you inside the first building, so have your gun ready. Clear out the room, then head out to the left.
Use the nearby gas can and kick it in the direction of where Ishi is fighting. Once you clear the area, head inside the next building. Walk around the pile of debris to find a Dropkit.
Once Ishi opens the door, head outside where another gang of enemies will await you. Take cover behind the wall to your right and use the two gas cans off in the distance to your advantage. Use the sniper to take out the guys on the docks.
Full Walkthrough: http://www.gamefront.com/bulletstorm-walkthrough/