There's enough to get inspiration a-rolling, it's generic enough to fit into whatever setting you're already using, and the system is flexible enough to easily homebrew as you see fit. It does what it needs to do, which is provide a framework. You can be a witch, who is also a robot piloted by a soul scraped out of hell. It's nice, it's easy, if you want to be a thing you can just go and become the thing. The fact that I mention this in a positive light (instead of "harumph it's so bloated and unwieldy") is the greatest sign of how easy and human-understandable the class system is in this game. Six races, four novice classes, sixteen expert classes, sixty-four master classes (plus the remaining 15 expert classes if you want to double up). There are 30,336 ancestry / class combinations possible in the core book There are also no requirements for taking on expert or master classes outside of narrative ones - hand your sword-and-board warrior a letter and a "yer a wizard", and it's not going to hurt your warrior skills. Each template (ancestry, novice class, expert class, master class) grants you traits at a specific level, and so there's no overlap. Highlight of the entire game, as far as I'm concerned. You could teach the mechanics to a small child or a complete newbie and they will understand it. I like this as a change of pace, and it's especially nice for a game where characters might undergo radical changes upon leveling up. Advancement is done via group accomplishment, rather than by combat or treasure.Insanity and corruption mechanics are nice and simple to use.Boons and banes are a fine system to factor in everything else.
The target number for everything that is not an attack is 10.The mechanic changes are a fresh of breath air Strong, consistent art direction is always an A+. All of them do a good job at emphasizing the grody, grimy, gritty nature of the game.
These are my thoughts from the initial read through.
I got sold on Shadow of the Demon Lord in the space of about fifteen minutes by some fellow on Discord.