Mine Cart Courier

This achievement requires some luck and planning. The main problem is that 1600 resources may seem much, but as a successful mine cart capture grants ~ 100 resources, and the escort of a mine cart grants a small number of resources every second, doing this achievement can be a tricky race.

Before the BG starts, you should localize the uncaptured mine cart on the tracks that is farthest away from you/or closest to the capturing point. Make a rush for that one! Hopefully you can make a quick capture without getting additional resources from the escort.

The two most difficult mine carts are those following the northern tracks, which requires a switch of the tracks in the intersections. Our tactic was that we ensured that the carts went north, and then abandoned them, allowing the opposing team to capture them for escort. As the carts got closer to the capturing point, we assaulted the escort, and re-captured the carts.

You must allow the opposing team to take some carts, otherwise you will probably win before managing to do this achievement, as you need to personally capture the mine carts in all the five directions, it is not enough that your team manage to do it.

Edit: Currently, you must score with the cart on each track, it is not enough that you change ownership over the carts on each track.
Edit 2: Typo

This achievement is obtainable in Training Grounds, and is simple to solo:

1) Go water immediately at start
2) Go top/west immediately - it will nearly be capped by the time you arrive
3) Go lava and switch BOTH signs on your way - cap the lava cart
4) Go top/north and wait for both carts to arrive - they cap just as the game is ending

Hey guys,
i just did this after few "almost" tries. Here is my strategy [Horde];
Legend: Lava(Right depo), Water(Middle depo), Left(left depo)
1) Straight go and change Lava direction to TOP;
2) Clear allies and rush back to cap Water
3) After this check if you can ninja Left
4) Now go and cap Lava it should be near top depo.
5) After that go quick and change Left track direction to TOP.
6) Now go clear mid and go cap Lava (to bottom).
7) If everything went by plan you should have only Left cart near Top and cap it.

Here is an image of the order i used for the achievement: http://oi61.tinypic.com/3531tna.jpg

p.s. If your team failed in 3) don't give up, you can cap 3) after 7), but then again you may need to ask your teammates to let allies cap few carts, because otherwise you will win the game before you can cap Left

Hope i helped someone, good luck friends ;)