This map has a discussion topic which can be visited here

This is a small map, meant for no more than 10 players. Each team spawns in a bunker on either side of the platform in the center of the map. You must hold the platform for 20 seconds without the other team entering it to get 1 point for your team. You can also lock down the other team's base (lock doors) by flipping the switch on top of their base.

Everything is done except updating it with FF entities (like 2morforever).

Update May 1st 2007: This map has been running on the Fortress Forever beta server for a while, and is fairly popular. I have updated it by lengthening the field, widening the island and putting FF textures/entities in. I won't release the current version for HL2DM because it has FF content. When FF is released, you will surely discover what a blast it is to play on Attrition.