pigdog: Gothic 2 is a great RPG, open-world game. For me, it's brutally difficult though, so if you want a challenge give it a go. If you prefer an easier game, then it's still great with cheats that help you progress.
I'd say it gets easier after you level because I think the world is static, ie, creatures don't level. Personally I like the fragility of early levels because I can remember which monsters tormented me then I can go back and kick their arses! Sweet retribution!