Homefront

Some tips for all stages:
- Difficulty does not matter, so you're better off playing on easy.
- Use cover! Most of the environment is indestructible, everything from airplane parts to wood crates, use that to your advantage, and heal when you've taken some damage.
- Take it slow! In most parts of the game (if not all - there's at least one spot I'm just not sure of), there is a set number of enemies, no unlimited spawning like Black Ops, so there's no pressure to make it up to a certain area. Take your time and pick guys off from a distance. Your team will usually run ahead of you when an area has been cleared. When they get to the next area, they may take out a few of the enemies or, at the very least, help show you where the enemies are ... BUT ...
- Your team AI isn't always great. Enemies will sometimes run right by them and come after you. Your team can't be killed, which is a huge plus, but always stay on your toes!
- Watch out for the grenade indicator. There isn't a 'throw back' option like in other games, so your only choice is to get out of there!

Possible Issues with Stage 3: (minor spoilers)
- After making it through the initial assualt, you gain control of Goliath to drive off the KPA. You regroup with your team only to have an attack chopper return. Right after regrouping with my team I immediately ran away from them hoping the chopper wouldn't pay much attention to me (it killed me the first time I tried for this achievement, I just stood out in the open thinking I had time to bring down the chopper ... I did not)
- Inside the store - Take Your Time! Advance slowly, check every corner, nook, cranny, etc. for guys hiding. At one point you are told more troops are coming in through the roof, if you get yourself over to the far right wall, you can catch them as they rappel from the chopper and just mow them all down. At the very end, you walk up a ramp, be careful here, my first playthrough of this level (when I wasn't going for this achievement) there was a guy at the top waiting for me, having been ignored by both of my teammates.
- The beacon - When you come out of the store again to plant the tracking device, you follow a path to your right. I think you encounter 4 enemies here, 1 before you even hop down to the ground, 1 a little bit farther ahead, and 2 inside the building you run through. Be alert, but when you're not shooting, RUN!! You CAN miss the truck (like I did), and a missed objective counts as a reloaded checkpoint, so no achievement.