As of less than an hour ago, FusionFall Universe has been shut down:
https://twitter.com/FuFa_Universe/status/1250853242722037760
The FFU website has been deleted, Retro can no longer be played, and Legacy is canceled. This is... well, it's pretty horrible.
The future of this wiki will probably be similar to what it was like when the original FusionFall closed. My only hope is that the wiki can be edited to a state of completion (particularly the Mission Pages).