Quick Take
- Narration: Boise Blue handles the dungeon crawl sequences with energy and keeps the political interludes from dragging.
- Themes: Power progression through adversity, political maneuvering, found-family dynamics in a fantasy setting
- Mood: Propulsive and dungeon-heavy, with slower strategic passages woven in
- Verdict: A strong continuation for established fans of the series, though new listeners should begin at book one.
I tend to come at progression fantasy series like this one with a specific kind of attention. The genre has developed enough conventions by now that the interesting question is rarely whether the protagonist will grow more powerful. It is whether the author can make the process of getting there feel earned and specific enough to matter. I listened to Ajax’s Ascension: The Delves, the fifth book in Keleros’s series, over the course of two evenings, and I want to be honest about both what it does well and where it tests the reader’s patience.
Ajax has just won an under-fifty tournament on the international stage, and this installment follows him into the dungeons of Sylvanthal and Deepwood as he pushes himself to fight in areas far above his own level. The series is published through Royal Guard Publishing, a house that has become home to a number of progression fantasy titles, and the book carries all the hallmarks of the genre at its most committed: detailed power systems, dungeon architecture that matters mechanically, and a protagonist whose growth is tracked with genuine care by both the author and the reader.
When the Dungeon Runs Dominate
The most useful signal from existing listeners is the split between those who found this installment as strong as its predecessors and those who noted that the repetitive dungeon crawl structure made it harder to stay engaged. One reviewer describes it plainly: a bunch of dungeon crawls with some politics sprinkled in, with the repetitive nature making the book a little tough to sustain interest through. Another celebrates the same quality and calls it very fun. Both are accurate, and both reactions are predictable based on what a listener values in this genre.
If your interest in progression fantasy is primarily in watching a character navigate power hierarchies and political obstacles, The Delves will feel weighted toward the combat side. If you come to these books for the dungeon mechanics and the steady accumulation of capability, this installment delivers that in quantity. The question of which camp you fall into is genuinely useful to know before you begin.
Noble Politics and Foreign Courts
The most interesting new territory in this volume involves Ajax’s relationships with his former competition and the reactions of foreign nobles to his presence. His friends, all children of high-ranking nobles, create a built-in tension between the social world and the dungeon world that the earlier books have been developing. The Delves advances this thread without fully resolving it, which is appropriate for book five of an ongoing series. The ending is described by reviewers as setting up the next book clearly without leaving the reader on a manufactured cliffhanger, which is a fair and honest way to handle installment structure over a long-running series.
There are some continuity errors that sharp-eyed readers have noticed, including a character who shifts from nephew to niece between this book and its predecessor. These are the kind of errors that a more rigorous editorial pass would catch, and they are a recurrent note about self-published progression fantasy that the author and publisher would do well to address in future volumes. They are not narrative-breaking, but they are noticeable enough to pull attentive listeners out of the story briefly.
Boise Blue in Eighteen Hours of Dungeons
Boise Blue has a quality that serves long progression fantasy audiobooks well: he can sustain energy across extended combat sequences without letting the narration become monotonous. At eighteen hours and forty-two minutes, The Delves is a substantial listen, and the narration is a significant part of whether that length feels appropriate or exhausting. Blue threads the needle reasonably well, though the sheer volume of similar dungeon sequences in this installment does test that consistency at points.
The political scenes benefit from a slightly more varied register, and Blue delivers those with enough differentiation to keep the characters distinct from one another. With a 4.8 rating across 766 listeners, the series is clearly resonating with its target audience.
Where This Fits in the Series Arc
Book five is not the entry point for anyone unfamiliar with the series. The world, the power system, the social hierarchies, and Ajax’s established relationships all carry weight here that is built on four books of foundation. Readers who have followed Ajax from the beginning will find this a competent and satisfying continuation of a world that clearly still has room to grow. The international scope introduced in this volume opens territory that the earlier, more domestically focused books had not fully explored, and that expansion suggests the series is still building rather than coasting on its setup. The eighteen-hour runtime delivers value for that investment, and the combination of Boise Blue’s narration with Keleros’s world-building discipline makes the long listen manageable even when the dungeon-run density tests patience in the middle passages. With nearly 800 listeners giving the book a 4.8 average rating, the series has clearly found an audience that appreciates what it is doing and wants more of it.
Frequently Asked Questions
Can I start the Ajax’s Ascension series with The Delves, or do I need to start at book one?
Start at book one. The Delves is book five and assumes familiarity with the characters, power systems, and political landscape established in the earlier installments.
Is the dungeon-heavy structure of The Delves representative of the whole series?
Reviewers note this volume has more dungeon content than previous entries. The series generally balances dungeon progression with political and social storylines, but the balance tilts further toward combat here.
Does The Delves end on a cliffhanger?
No. Reviewers specifically note the ending sets up the next book without leaving the reader on a cliffhanger, which is consistent with how the series has handled its installment endings.
How does the narration by Boise Blue hold up across nearly nineteen hours of content?
Blue maintains consistent energy throughout the dungeon sequences and varies his register for the political scenes. The length is significant but the narration does not become monotonous.
