Starts well enough, even though its noticeably more children oriented than Trollhunters. Still, a lot of potential that never goes anywhere. Season 1 is pretty good, but second season is a mess. They can claim all they want that they always planned only two seasons, but its painfully obvious that they became aware around half way into the season that its gonna get cancelled so they stuffed season and a half of plot into 6 episodes. Unfortunately, that means there's no character development or time to reflect on things that happen. Its just a blur of action as major plot points come and go within minutes. Blink and you'll miss it... You won't be missing much as most of of those amount to nothing and it becomes obvious there is no time for major shifts in the story as the show just sprints towards finishing line, one that was obvious and visible from the start of the season.
I would also like to reflect on animation. Trollhunters often vowed with its texture of trolls and details like hair. Akiridons on the other hand have very smooth texture, they use semitransparent materials and have a faint blue glow. All that amounts to a very unimpressive look that feels very low budget. Trolls are in here too and they look as impressive as ever.