Here is some advice from the Zhizhu Mercenary Corporation, brought to us by the mercs hired to defend against them.
This new enemy force, as you already know, is composed of 4 invaders with similar origins and differing intentions. Their reasoning and origins are of no concern.
All you must know is how to defeat them.
Many tactics have been deployed so far. Of note Blitzkriegs using fast Battlemechs to storm the gates and take out their defenses have proven moderately successful, but as with any strategy counter measures have been created.
Two more of note include rushing to disable their defenses without direct confrontation, often leading to the slaugh...ahem... 'deemed necessary sacrifice' of countless forces in the process. Which has had little success. The other is in getting a strong foothold into enemy territory and wiping out enemy forces before proceeding, which has had greater success but many failures as well.
But here is one you may not be aware of. These supposedly superior machines seem to have trouble fighting at close ranges. Furthermore, their legs seem to be very weak.
A strategy that Zhizhu has come up with is to destroy an enemy's leg and then flat-out ignore him. The pilot will become so insulted that he or she will eject, diminishing their numbers.
Legging an entire enemy force, and then swiftly going after the objective has led to mass enemy ejections, wiping out entire droves of the enemy with very little effort. Just remember to return to cover promptly after the mass ejections begin, or else the enemy dropships will make short work of you.
Good luck.
Edited by Koniving, 27 January 2015 - 08:47 AM.