SPOILER ALERT, the long and short is the ending books bring the series down by a lot
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this series was good, while it should be a fantasy world with convenient rpg mechanics the real problems are the severely rushed nature of the final books, the big bad guy is spawn camped to level one and killed by a random officer on a side road, the entire end game is so rushed they fit something built up over the series into a single book and then leave a large portion unresolved, really if you want a book where things are resolved by the end go somewhere else