The vast majority of this map has been lifted directly from the Allied Assault single-player campaign. Right from the off the map becomes a grenade fest with both teams throwing themselves into the fight. Mist provides a certain amount of cover and this is often supplemented by smoke grenades.
Because of the multitude of explosions friendly fire can become a problem. It is important to bear this in mind or you will find yourself kicked from the server for killing too many teammates.
Ultimately, this map ends up being a bit of a stalemate, albeit an enjoyable one. As soon as one team pushes the other back to their spawn area the attacking team loses the advantage.

To be the first team to reach the Frag Limit OR be the highest scoring team when the Time Limit is reached.

Use smoke and grenades to clear the area ahead before advancing. Bounce grenades from walls to get them round corners.
When moving forward, keep low and hug the walls of the buildings for any cover you can find; but be quick as there will likely be several guns trained on you from the balconies above.
Always check that no one is laying in wait in an alcove or doorway, before you pass or you'll get a bullet in the back.
Try to outflank the enemy and get onto the balconies above their end of the map. From here you can take advantage of the height and surprise them.