1. Try walking cross country, especially at night. Be warned though, death is ultimate on the world map.
2. Get a bear an another spear guy, maybe another heavy guy. I never messed with the magic users, except for the summoning classes, I think they are way underpowered.
3. I cannot remember.
4. Wolves are not that strong, but quite fast, which is all you need in some missions. The shape changers aren't that effective because they need to spend a round to change.
5. Nope, no class change.