There is an extremely good balance of humour and fantasy, as well as its spinechilling and downright sickening moments. But with also enough lulls in the storyline such that it's not incredibly action packed every episode.
The range of characters and their personalities are also very well balanced and contrasted against each other in the appropriate situations. Should it be military personnel providing a more serious atmosphere, to more rowdy/different characters such as Edward himself to provide a bit of humour.
Certainly, this is a must watch, and it's hard not to be disappointed by this series.
