Ugh, what to say... I'll start off by saying that I'm a big fan of the series and I was patiently waiting for 3 years for this game. Checking the website regularly to see if there were any updates. I've played both Book I and Book II multiple times with different builds and playstyles. I love both of those games to bits. Now after 3 years, what we got was a short and disappointing ending to the trilogy.
I really hate to say this, but Eschalon: Book III is the worst part of the trilogy and very unsatisfying in almost every aspect. Not only is it by far the shortest of the three games (took me around 13 hours where at least 4 hours was aimless wandering, trying to find obscure clues for obscure quests.) but it also has the worst world design of the whole trilogy. Around 50% of the world is swamps and all the roads and passes are infuriatingly designed where every convenient way is blocked, making it a huge pain to get around if you're going for the no fast travel challenge. This was not the case in Book II. I'm not sure if I'm just so used to the Eschalon ruleset, but the game was also extremely easy and only after around halfway the game started throwing at least some challenge.
In the end, it's still Eschalon. It's still fun for what it is. But I really really hate to see the series end like this. *sigh* I'm going to put a thumb down just to balance things out, but honestly I don't know if I'd recommend it or not. If you're a fan, you already have it and this review won't hold a lot of weight.