Audiobook
To start: this book was not what I expected (in a bad way).
This is not the story of a set of mimic-armor that tries to blend in with a band of humans, but slowly comes to like them, despite not quite understanding human concepts like "love" and "honor".
The protagonist just suddenly, magically, becomes a person in all but flesh. They have a human-like moral compass (if a bit blood-thirsty at times, but completely within human limits). Their thought processes are largely human. They have a human-like libido and appreciation of flavorful food.
The protagonist is also not the type of mimic I expected: no maw of teeth or anything of the sort. Instead, they're essentially a living void-dimension, that is merely contained within a set of armor. This lends itself to the protagonist having lots of weirdly over the top powers, and is functionally immortal from the get-go.
So, right off the bat, the story was not what I expected. I was not pleased, but I stuck with it.
The story I got from then on is a very dry Progression Quest. Get a new job, beat it, unlock a new superpower; Rinse-repeat. The story slowly raises the stakes, from "this bad guy needs killing" to "a dark god is going to end the world: save the world".
Along the way, there are some interesting moments with the other members of the Adventuring Party. Each character gets a chapter dedicated to their backstory, and a paragraph dedicated to their progression/level-up. But the story has a bad habit of reducing these characters to little more than the Main Character's cheerleading squad; they get in trouble, can barely hold their own, until protagonist swoops in and saves the day.
It's not a bad story, but it is very generic for its genre. If you like to see a strong character keep getting stronger, fighting bigger and badder enemies along the way, then this book will distract you for a bit; but it's nothing special. If not, probably don't bother.