This game mode would consist of attacking and defending a number of points. Escort does not make sense here, however I mention it to refer to the Overwatch mode. Assault refers to the mode in Unreal Tournament.

Players are tasked with attacking/defending a set of 3 points. Time ticks down and stops when the attackers successfully take all of the objectives or time runs out. At the end of a round the attackers and defenders switch roles. The winner is decided by who progresses further in less time.