Try to bait Terminus off the point by getting somewhat close, keeping your void grip ready. Use it as soon as Terminus uses his shatterfall attack. It'll cancel the attack, putting it on cooldown while you retreat and your teammates melt him.
Get Haven and Life Rip for sustain, and take Rogue's Gambit for mobility or Artful Dodger for even more sustain. Also keep in mind Lex's Retribution; always be prepared for an ambush.
While Maeve is best at flying around an open map, a closed environment doesn't hinder her performance. Use Prowl to speed around corners, and jump INTO corners to confuse the enemy.
Smart Fernandoes tend to mostly dive the enmy backline to distract and disrupt. When he dives th backline, this is your best opportunity to go for his backline and kill off his heavy damage dealers, especially while he regens with Last Stand.