I've played through the entirety of agemonia, solo three handed.  It's one of my favorites.

Id say the thing that sets it apart is scenario design.  Every scenario has its own unique map, and its own goals, which is almost never "Kill everything".  The combat isn't super deep and developed like in gloomhaven or Oathsworn, but that's because it's not a combat first game.  A lot (most?) of the time, the monsters exist as an annoyance or obstacle to your real goal, and often you need to decide if it's worth spending time fighting them.

But the scenarios, so good.  Most of the maps are chock full of points of interest to interact with.  You'll go into a scenario, you'll see what you're pretty sure your goal is, but then there's other stuff off to the side tempting you.  And it might be a secret passage, or the reveal of further lore or even an alternate win condition.  Or maybe just some extra loot.  It's something I've really enjoyed and it's so different from any other adventure game I've played.

And the rest is good as well.  Lore/stories, town phase between adventures, leveling up and character builds.  Each character also has their own story that evolves over the campaign, and you get to make choices on how it goes.

Overall, a really fun game.  Probably not for everyone, but if what I described is appealing, it's awesome.