The LOTRO forum's have solo challenge that people have tried on their own. So I wanted to try a few. Here's my Captain's list:
Dhit the Troll in Trollshaw at lvl 65
Grand Stairs easy mode: Fire Boss and Igash (I tried the Beast but he kept healing the Troll. Anyone able to solo these two?)
Not exactly a big accomplishment but cleared the beginning area's of Skum and Forges (virtue deed grinding.)
On my Minstrel, I surprised myself soloed the 75k signature Huorn in Limelight Gorge. Did that twice. Then read in the Minstrel forums that a few Ministrels have soloed the turtle raid- dare I try that?