Alright, since I gave a review about the 'Path of the Damned' campaign, I might as well give a review to the others
Chapter One:
-You could make Heroes' abilities have QWER hotkeys
-I find Thrall's comment about Forest Trolls hilarious, since technically the Horde abandoned the trolls during the Second War
Chapter Two:
-I really liked that you used a different model for the captured Grunts, which help us know that they are members of the Warsong Clan. however, they are slightly smaller than the regular Grunts
-Last Cinematic problems:
--The camera used while Thrall and Grom are talking after the latter has to be fixed, because the bars doodads are blocking us seeing the two orcs
--The grunt that comes to tell that the Horde is assembled pops out of nowhere. Move the camera more to the left so that we don't see the grunt appearing.
Chapter Three:
-Maybe you should give a human model to the Kul'tiran Rifleman unit, because we know that there are no Dwarves living in Kul'Tiras
-The Murloc Sorcerer has a Mur'gul model
Chapter Four
-Technically there are 12 prisoners, not 10.
-How in the world Murloc Sorcerers have fire-based spells rather than some based on either Frost or Water?
-Thrall's voice is not heard in his comeback to the Murloc Sorcerer.
-Very good to see that you gave Zar'jira a ghost naga sea witch model, which fits her lore-wise! Good job!
Chapter Five
-For some reason Zar'jira is using the 'Walking' animation while talking to Thrall in the opening cinematic
-It is weird that Za'jira not only has the same attribute points as the Murloc Sorcerer but somehow deals less damage than him (she deals 37-43, while he deals 37-47)