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Well, getting logistics with a 2% drop rate is a bit difficult.
Otherwise, you can rely on machines and break through to the center around the 2nd week, using your former allies, and then you can more or less start clearing the area (but even then, if you're playing against Necropolis, you can break through in the first week, but it's harder with these (even if you do break through, your army will be heavily damaged, but of course, it depends on who guards the bridge) - again, it's a matter of chance). What artifact will be in your zone (so you can grab it first, because you won't be able to take it from normal opponents).
Again, it's a matter of chance. They might give you a Necromancer's Amulet.
Ingvar was the hero.
Igor, aren't you leveling up Leadership?
And what about Education, is it worth taking (on large and very large maps)? I can't decide (I've always taken it, but lately I've been wondering about Leadership).