Downhill trend
This is a game I never finished because it simply went on too long and I lost interest - there are a lot of interesting troops and quests, but I was also running into a fair few bugs (I struggle with the miniature text, I can play around the invisible troops, though they make fights... interesting, but not getting rewards for completed quests sucks.)
I also hated being railroaded by the story: You have to fulfil quests that I really did not want to do in order to proceed, and then you get told 'you should not have done this'. Well, duh.
Overall, you're better off replaying the first two instalments in this series.