Here's an old message I found:
Usually, by the last mission, Wolfenstein should already have "Resurrection," which is very helpful. We give everything to Wolfenstein, break the first and second garrisons, and within the first or second week (I don't remember exactly, it seems there was logistics on expert difficulty), we take Tolgar's castle. I remember how angry I was that the king had infinite mana and runes (a cheater!). Yes, and his priests also had infinite mana. Several fire walls are brutal...