Originally posted in the old Capture website, at capture.beyondunreal.com, now defunct. I had a copy in my backups.
DOM-Core is composed of four levels: a basement which houses a super shield and a elevator going all the way up to the forth floor - the catwalk; a ground floor which contains the two capture points, a system of pipes that hang over both capture points, but not in-between; a top catwalk that runs from one end of the map to the other which is interrupted in the middle by a lightning gun and some health. The two Capture points are located inside identical bases that are at opposite sides of the map. The capture points can be reached by falling from the pipes or by a passageway on the ground level.
The passageway into the capture points are the choke points of the map. They are where the most heated action takes place. Control of these points is critical to a team's success on this map. A short distance from these passageways is a ninety degree turn. This turn prevents the defenders from seeing their enemy before they are right on top of each other; however, there is a camping spot for the defenders. The camping spot can be reached by jumping on to the top of the passageway and then shield jumping onto the pipe that is right above it. It's the large pipe that has a small one right above it. This spot is perfect to suprise the attackers that think no one is there to stop them!
A tandem of skilled defenders is all that is necessary to successfully defend a capture point: one is watching out for any attackers that are falling from the pipes and the other guarding the door. The door defender should be equipped with the Shock Rifle, MiniGun, and Lightning Gun. The top defender really only needs the Lightning Gun and the Shock Rifle. If one of the defenders is killed, the other should go behind the Capture point, where he can defend both angles, to defend until the other returns. While going solo, the Shock Combo is the best weapon to fend off the attackers because it covers the most amount of space per shot. While in a countdown, it is best to charge up your shield gun and stand on top of the capture point to gib any one from falling on the point at the last second.
One of the easiest ways to get from one side of the map to the other is by using the catwalk at the very top of the map. It can be reached by double jumping off of the big elevators that are on the side of both bases. The catwalk runs from one base to the other. In the middle of the map, there is a room that houses a lightning gun and some health. The catwalk is started and ended by an alcove that houses a regular shield. The catwalk will let you move quickly to make a last second save. It is possible to jump from the catwalk onto a capture point. To do this, you must forward jump from the portion of catwalk that is directly above the elevator that takes you from the Capture Point base onto the catwalk.
There are also some really neat trick jumps for this map, none of which I have been able to pull off. The first one I know off if the wall boost dodge off of the ledge that the control points are on onto the elevator. Rumor has it that it is the hardest boost dodge to pull off in the entire game. The other trick is to boost off of a small elevator in the middle of the map onto the catwalk. I know of one person who has pulled it off and it is amazing. It is supposedly done by using a shield jump.