I first had my problems in Special Missions Solo since Apothecars only Heals me and not any one else. Other People had the same problems. But rethink your Strategie and it is not problem after all. With the new Patch comes the possibility to select diffrent Classes in Special Mission Solo

You have at least 3 options to Heal, so to say:

  1. Interrogator Chaplain
  • Use Skill Nr. 1: Call to Arms instantly revives Teammates/ Brothers
  1. Tactical Terminator
  • Use Skill Nr. 1 it revives with reduced cooldown on Brothers and Teammates
  1. Use Psygate after every Objective

That means you let your Brothers die from time to time, so you can revive them again and again!