Just a couple of comments before I head to bed, and off to the next show...
We'll have all the PH2 characters available again this weekend at New York Comic Con in the Delve area, so if you're nearby, stop in to play. If you just want to game, we've worked with the show to offer a weekend-long gaming badge for $15.
We'll also have the full 2-page splash for the avenger there, which lists the all the standard stuff - hit points, defenses, class features, etc. in full. It should give you a much better picture of the class and what it does. (For what little it's worth, the avenger is my favorite PH2 class and I'm making one for my next character.)
I think I made a typo on the shaman's AC. Looks like it should be 18, not 17. I'll have it fixed soon enough.