Well, after that you have to fight Guilford himself, but yes.

Thank you.
Do i have any break betwen fights, at least betwen eric and guilford to do all everything else or to refill army?

You have a break between Eric and Guilford.

In fact, there is a glitch where you retain the mana boosts after the Eric/Ally fight so you can 'abuse' that to clear the rest of the game for MORE xp!

You get a break between any of those fights.

caretaker of the mine is in one of the houses at the mine? Where?

I'm stuck with only the main quest to do :) Alliance with Vikings, Elves and Dwarves. Can't advanced. The only places I didn't go (because I don't have the map) are Tugsinn and Iceland. I already speak to both kings in de alliance with Dwarves and nothing