I dominated lagiacrus in both urgent missions, then had my ass handed to me in the capture mission. I think that he is a lot harder in the flooded forest because of the small areas you have to fight in. Also, I think I got cocky, I spent a lot of time preparing for the lagiacrus mission, and went in with a good amount of respect for the monster and was well prepared. When I faced him again later, I think I took him for granted because I had beaten him already. But he did seem more aggressive, so I'm not sure. I'm loving my armor right now though. I have Ingot, with +35 lightning resistance and immunity to poison. It's essentially perfect for fighting anything that is not in the volcano.