Homefront

Heartland seems like a peaceful environment atleast until you speak to the natives. Lets just say Rianna doesn't like to be toyed around with. The resistance in this place is really no big deal. Move up slowly once you've taken care of a few of the enemies. To the right just below the windmill is an enemy with an RPG. Take him out quickly, after that kill the remaining that is left over in the broken down white building.

Return back to Connor where he gives you a new Sniper rifle. Now make sure that you listen to Connor's words exactly. He doesn't want you to fire until you have the word to do so. I made this mistake by accident and failed the mission. Follow Connor til you arrive at a crossroads with two men talking and a man in the nest.

This part is mainly just about Stealth in order to get to your objective so there won't be a lot of gunfights til a bit further on. Keep following your team in the directed path coming along a few threats along the way. You will eventually enter a house right after you take out the last sentry and kill the survivalist inside SILENTLY.

Move along towards the river now and follow along til you see another large group of survivalist. This is where we go in guns blazing. Now you will be faced with a decision as you continue forward. Koreans or Survivalist? Hmmm well they both wanna kill you so why not both right?

After I took out the Koreans I moved up behind the helicopter and took cover and took out the remaining enemies. If you need more sniper ammo go onto the back of the green truck bed on the right side with a ramp on the back. There is even more ammo up infront of you in a sheet metal building can't miss it. Take out all the enemies in this area and move on til you see another enemy with an RPG in the nest up top. Continue forward to the Church now.

Achievement:

Stairway to Heaven: From the front door of the church, make it to the crow's nest in 240 seconds in Chapter 5: Heartland.

This was actually very simple just run and gun all the way. You should be able to get it in no time at all. Once you reach the top move to the back and you'll find some more Sniper rifle ammo. You'll end up using a lot trust me. Follow Connor's orders and take out the enemies as they are called out again. After you are finished you are directed to jump down and make your way to the Helicopter. There are three enemies coming from the left side by jumping down from the platform. Take them out first and take the right side path as you go towards the Helicopter. There is plenty of cover that way.

Hope this helps :D