1F and 2F, ppl can do anything they want as it's easy. 3F we'll need the following plan;
1) Tower teams make a beeline for the back and hit the towers/gates ASAP.
2) Trash teams start clearing the mobs around the Generals of Eternity, considering how many there are there's no fear of getting hit by the General.
3) Once tower/gates are down, strongest tower team tags the Imperial Witch before she goes oneshotting the other teams, other tower team starts taking out the Generals of Eternity.
That should pretty much be it really. Another thing i should mention is that for our weaker trash teams it would be ideal to assign a 'looter' role in the party of 3. The weakest member of the party will have the role of simply looting mobs. Why? Prevents the auto resurrections. For trash teams the absolute worst thing to happen is to have a mob resurrect on you, especially they res at full life.