This review is based on the official NA translation of the first and second volumes and will be updated as I continue to read.
Story: 10
First of all, it was extremely refreshing to see the isekai genre take on this type of story. It's a simple story of confused teenagers thrust into an unknown world without prior knowledge of who they once were. The main reason I enjoyed the story of the first two volumes was specifically because of them not knowing what to do. Seeing them grow through trail and error in a vast and unforgiving world made for a surprisingly emotional story.
Character: 10
Another aspect that I absolutely loved were the characters. Each and every one of them had multiple layers(much like onions). They all had personalities unique to them, I could even tell in an instant who was talking because of their distinct speech pattern. A character that stood out the most for me was Ranta, at first (especially in the beginning of the second volume), he was the most annoying person in the entire book, at times I actually wanted him to die, but he quickly became my favorite characters in this series, I don't really want to spoil anything so I'll just end it there.
Translation: 10
Flawless,nothing was out of place and in fact, it felt like I was reading an actual novel and not a light novel.
Overall Enjoyment: 10
The two volumes gave me more closure than any of the other 40 or so light novels I've read. The author could even end the entire series at the second volume and I wouldn't be disappointed.
Conclusion:
In conclusion, this is probably the best fantasy light novel I've read. This story, at times, even felt like a normal fantasy adventure novel and less like a typical isekai light novel, and coming from a guy who dropped the anime on the first few episodes, I recommend "Grimgar of Fantasy and Ash."