I really enjoy this series, its ovas, movies, and even Sword Orratorio. I was excited to see where the 4th season went. And I am aware they split this season into 2 parts.
However the story telling in part 1 is pretty sparse. Aside from our hero meeting a new monster girl and a glimpse into the past if the blonde elf, this whole part of the season is just fight, fight, fight... and pretty much nothing else. Not that it is bad to have all the action, as it gives some secondary characters a chance to shine some, but still. And leaves you hanging... big time. I figure that part 2 might have a little more story. Or at least I hope it does.
Either way its still a great watch, but not quite as up to par of what I have come to expect from "Dungeon".
I really loved this show, and eagerly waited this season. But I must say, that this season was a complete mess, like just some random things happening one after another. Because of that a give 5 out of 10 for the story.
The animation and sound was like in the seasons before, a solid 6 and 7.
The characters didn't develop the slightest. Bell is indecisive as ever, he didn't have any resolve just the usual hypocrisy. After this much time i'd think that if he can save many people with killing an evil person he would do it, but instead he wouldn't. he'd just let them die then cry about it. So i gave a 5 out of 10 and it was a very generous score.
So in overall i gave the season a 6 out of 10.
This series is an underdog like its protagonist, which grew so much. The first season left in me impression of the series being rather typical underdog protagonist action series. You know the average shounen kind. The second season moved the MC from the underdog position, but overall didn’t impress me either. The third season introduced interesting dilemma for characters. It was a pleasant surprise. This season was to my unbelieving eyes even more enjoyable than the third. It has heavy focus on the adventures in the dungeon with lot of suspense, action and very dramatic fight moments. I think even more than ever in any previous season. It preserves some of the fanservice elements, but it isn’t beating viewer to the death with it. It gives enough screen time to other characters as well. How it did even get that good? It’s mind boggling.
This arc could be split into the several parts. The first part  is great and very enjoyable, but the second part  is even better. The only downside is the second part is obviously to be continued in the next season.
Audio-visually the series manages to keep great atmosphere through all episodes. It has some gruesome scenes – people split-in half, heads and limbs flying, etc.
This was one of the best things I have watched throughout the season. Just watch it.
 The plant monster arc
 The calamity arc - first part
Cant wait for the next part of the cour
Amazing storyline amazing dub voice acting and sound effects it almost seems like your there because of the sound effects because of this I get lost in the anime and tend to forget what happens so I skip back the anime is remarkabley different from other somehow the anime is so incredible I chose to make an account just to right this review the impact this anime leaves on the watchers is just utterly incredible not to mention the animation itself the way everything was and looked just was perfect 10/10 raging from the voice acting in the dub cast and the animation also the hole plot so far I just can't describe how amazingly great this anime is compared to the other animes and I wasn't even a fan but the English version and animations and overall the hole story just grew on me I hope it doesn't end😁👏
Well done you deserve more praise