Why do you only underman when you think you need to? Just underman as much as possible to begin with… be efficient. If I know I can take a team out solo there’s no point to making it a full team. Take Wampa for example, or Malak, Kylo Ren and a number of other characters in game that easily could take down teams with no support.
If you really want to make sure you’ll win, always aim for the full clear. If you think you can’t, then do your best on whichever wall you think you stand the most chance of clearing.
