I actually got the thingy to break the force field before I got there~
you'll get hints and clues, mostly quite easy to spot...the troll king, however, need to be very, very thorough~~
come to think of it, Troll's Bounty should be part of main quest, and its solution should not be handled as it is now.
btw, I got kinda bored later in phantom forest, just a series of battles,,,"let me do the final battle already~~!!!"
