Unholy Meatgrinder

There are two main entrances into the city. 1) The main entrance, heavy cover above the wall and negative cover in the path heading up allow this to be an exceedingly easy passage to protect for the defenders. 2) To the north of a tiny village the enemy has breached the wall and ruptured a factories integrity allowing their forces to swarm through; it is this point that the attacking side has the advantage on as it is not easily defended by the defenders; the attacker can use this point to flank and secure the main entrance if played right. The attackers also only have one relic however if the city is breached relics are readily available. The other layer of defense available to the defenders is the trench. It gives the defenders heavy cover whilst leaving anyone foolish enough to be charging towards it negative cover.
A 2 v 2 map. 2 players start behind several defencive layers of the city; The outer city walls, the intercity trench, and a single defensive wall. Both the attackers and the defenders are well off.