Objective;

Blue starts as the attacking team, Red the defending team.

The attacking team must take the flag to each capture point sequentially.
The defending team must stop this.

When all 4 capture points have been secured, team roles are reversed.

-ost version -->  Edited using BSPEdit by Suicide_Kid to fix (somewhat) the spawn point directions (angles).  Some spawned the players facing away from the direction of the current capture point.