Zombie Army Trilogy

To get this achievement, all you need to do is survive until wave 10 (you do not have to complete it) and have the highest score by the time your team finally goes down.

To make it easier, you can hit "Select Difficulty" in the horde lobby and change it to Cadet, and then change "Enemy Setup" to "For 1 Player," which will make the game spawn the amount of enemies that you would get if you were playing solo.

The map I used was "Dead Man's Bluff." I would recommend this map because there are many places that you can run to, and there are plenty of choke-points.

For the scoring part of the achievement, work with whoever you are playing with and make sure that he knows that you are going for it. We were going back and forth between who had the most point, but that was because I was not worried about getting it at the time.

For weapons, I would highly recommend the Mosin Nagant because of its high velocity, but use whatever you are most comfortable with. For my side weapons, I usually run the PPSh-41 and the Luger P08.

I also ended up with the "I'll teach ya how to shoot!" achievement about a minute or so later. Both achievements go hand-in-hand (and with other maps if you don't like this one).

I got this solo on dead mans bluff. I stayed near the shotgun ammo and ran to the steeple when things got hairy. At the end of wave 9 i got "They're Coming To Get You Barbara" i then killed myself and unlocked "Guts And Glory" and "Ill Teach Ya How To Shoot.

I would recommend using shotgun 99% of the time and sniper for the jumping guys and pistol for emergency running.