Well if I ever was drawn into the PMD:EOS world, I'd have amnesia, so what the hell would I do? Someone finds me, I say I'm hunan, that someone doesn't believe me, yada yada yada...
Heck, I'd team up. Exploring is awesome! So is fighting those outlaws that are 10 levels higher than you. Although I wouldn't wanna tick off the annoying Chatot, I'd watch my mouth. The other Guild apprentices are a bunch of wenies, so I'd focus on becoming stronger, rising through the ranks as an Exploration team, and go save the world. Fighting legendaries is scary. How does a non-Legendary Pokemon stand against the colossal giants or the Powerful trios that can whip you? Yes, the lovely Reviver seeds.
Before I go into any more detail of what I'd do if I were turned into a Pokemon and had to save the world, I'd simply be part of an Exploration team and just deal with it. All I care about is having fun. :3