Players will have to travel to various rifts and stabilize them before shutting them, stemming the flood of ships into the main reality (i.e., the one we live in). There’s an associated reputation project players can undertake that rewards extra Dilithium and Marks of your choice, along with new Mirror Universe Dual Pistols for successfully completing the project and fighting back the invaders. So get ready to face your dark mirrors on consoles… unless you play a Klingon captain, in which case it’s more a matter of blowing up people you already blow up but slightly meaner than normal.
Star Trek Online since the earliest days of the game, because it sure is helpful to be able to repurpose Federation ships as enemies. Also, there are lots of episodes in which the crews of various ships have to deal with their evil mirror counterparts, so that helps to. And console players are going to need to work hard to repel another invasion by the Mirror Universe on the console version, which is kicking off today and running through February 8th.
Source: Official Site