Ranger – “Emerald” [5th campaign, 2nd mission]

It's okay, because I couldn't seem to capture the central castle first, although I probably just arrived when the army had already been purchased by the third week, and you managed to do it a day earlier.
Well, the mission is completed, I think the original campaign shouldn't cause any more problems.

In general, the average stat increase for a Ranger is:
45% defense
30% knowledge
15% attack
10% magic

So it's relatively normal, except for the high magic. Although it also depends on which stat-boosting locations you managed to visit. As far as I remember, there are many stat-boosting locations in the first mission, especially for magic.