Well, there's a lot of battles, but I guess I expected that from a book called "Warlord of Mars".
Kind of a bit over the top (but still fun), John Carter has quite an amazing stamina, especially for the rarefied Martian air. Fight after fight after fight, day after day, without stopping to eat and barely rest.

Well, lots of very obvious twists (maybe it was new at the time) and a lot of running down dark underground caves, tons of exposition (where he must explain new mechanics of Mars, known locally as Barsoom, only because the situation hasn't happened before in the story and thus he, John Carter, the protagonist, must introduce them to the audience) oh yes, and another secret race of Martians nobody happened to mention for 20 years, and always conveniently placed weapons.
Nobody locks up their armouries on Barsoom, and remember, they are all naked (except a harness with jewels and medals), except for some fur coats in the north.
Still trying to figure out where all the silk and fur is coming from; fur-bearing animals are rare on Barsoom and from the looks of this book, they definitely aren't hunting them for sustainability anymore.

Maybe next book will have some giant spiders that make all the silk or something.

Also the use of the subjunctive voice gets really tiring after a while, especially to introduce "twists".


Edit: Sources tell me, when he says "naked", he means "in a Victorian sense", which is nowhere nearly as interesting.