Administrator's Notice: Below is totally talk material, and needs migration and/or restyling. - Hakdo
These missions aren't too difficult, as long as you use appropriate decks.
Use the same deck against all Empress missions as used against the Oracle in the Protectors' Cradle missions, with minor changes. Vigil Spam also works well.
Nimbus can be replace for another Full Power or a Mortar Bunker. In mission 119, Mortar Bunker should be used instead of Full Power. Dracorex can also be used for these missions.
Vigil Spam is Ideal, but not all people has access to it. Imperial+Weaken+Rally is best for this missions. Mortar Bunker can replace ComSat Terminal
Very Simple Deck. Play Hatchet or a Rally Structure First, then play whichever one you didn't play before. Next, play Chronos. Play the second Rally Structure Last. Should win over 95% on manual if played in this order.