Ranger - "Higher Vampire" [5th Campaign, 5th Mission]

Yes, that's exactly the point. I stayed at home for 2 months, then went for a walk for another 2 months, and I didn't recruit any reinforcements during that time. Archers aren't a problem at all; with mass evasion, adding them to the list of enemies makes them ready. 200 master archers could easily take out 30 Necropolis undead dragons in one turn, and considering the mass haste and slow effects, they moved about 3 times more often...
It felt like I was playing on recruit difficulty, not as a hero.