I read the first book a while back on my friends computer and thought it was superb and fresh. That lead me to all the high quality fanfiction this author had already written on fanfic.net (jbern) that really showcases his writing skills.
Intelligently weaves the story around historical facts
Exciting action scenes
The not so much:
Some minor grammatical errors.
Seemed a bit short to me.
I had already forgotten some of the characters from the first book. I know it's been a while but maybe the characters are not memorable enough?
It's not as good as the first book, but good enough that I'll definitely buy a sequel if he writes one.