OK, in more detail I propose:
Sapper 0AP plant a charge.
Bruno or Sapper: take the first aid kit, first-aid DC, crowbar S door, save. (Still in uniform for now.)
Sapper or Bruno: shoot S as needed, any spare shots to E, move S, save if possible.
DC: any further shooting, move S.
Bruno or Sapper again: use saved action to move S.
At this point we’re all stealthy in the objective room.
If there’s a dropped first-aid kit (3/13 in the equipment bag right now) then we can revive the medic as well but that’ll only become apparent when we start shooting. That would need some changes of plan since it would have to be picked up and brought to the northern room.
We don’t need to shoot W unless we become visible, which we shouldn’t before the base collapses on them at the end of next turn.