Sadly, I think that no-losses eventually precludes you from using level 5 units anyway, as they can't be resurrected. I know people have done Troll or Black Dragon only challenges, but for a game with about 500 fights, I want each fight to be over as quickly as possible. DG - I see from Steam that you have played something like 128 hours for this single campaign - how does that compare to most AAA titles?
Methinks we have got our $25 worth already.