I like it. I think the book didn't live up to quite as high expectations though because I read all the light we cannot see right before it, and I must admit it did the book thief in an even better way (though no death character)
Death’s perspective makes it. I don’t think it would’ve been half as good without Death narrating. He’s so well utilized and realized, and the quick glimpses of the future he gives makes the ending so much more powerful.
I probably would have liked it better if I hadn't read Discworld first. Discworld's Death is so fantastic that it made this look really gimmicky and cliche.
Overall I liked the book for the most part, but Death wasn't the part that made me like it, to say the least.