Ill make this easy by saying the ones they did correctly rather than incorrectly.
The missions where you raid Federation convoys is done correctly.
All else is a failure.
That said I didn't mind the original set of KDF missions (the ones with the bat'leth tournement) however I hated the fact that you ended up with Kahless' sword. Kinda made it less of a relic and more of a 'meh' item. As good as it is it should have been left as a mythical weapon.
All other missions are Federation themed just with a KDF skin on top, therefore they fail very hard at creating the Klingon feel.