First off, this is a golden age SF novel, so it is a product of its time. Not only does it fail the Bechdel-Wallace test, there is only one female character and she is the only one who has any description of what she is wearing. After chapter 2, that part of it is dialled down.

It's a story that has a common pattern in SF: the world saver. The entire world the protagonist visits is deadly, and his adventures in learning to best it are entertaining enough but not enough for me to continue this series.