Hey, slight necro. Sorry about that, but as I just finished the series, I thought I might as well chime in.
I finally got around to watching the show. I knew almost nothing about League of Legends, but figured that I might as well give it a try after I had been recommended it for about the 10th time.
I loved it. It's hands-down the best thing I've watched this year. The animation style was mind-blowing (I've seen a lot of people compare it to Into the Spiderverse), the characters were all engaging, and the story was tragic. My two favorite characters died early on (Claggor and Vander), but it served the story well.
I can't wait until the second season comes out. I hope that it keeps up the quality that this first season has.