I'm sort of in the same boat except the last boss I killed was Moder and don't really feel like progressing further. It's not necessarily the grind but rather that there's very little to look forward to. In your case I don't blame you since silver mining isn't exactly fun (neither was mining iron ore) and Moder isn't a fun boss to defeat. It feels like after The Elder and a little bit after that the magic from the game is lost. I hope the devs can improve on the game so we can keep that "magic feeling" going rather than feeling like an eternal grind. The game needs better balance and more fun activities throughout. It is early access and I hope the devs will improve the "mid game" experience of the game.


Edit: (TL/DR:) Bonemass was a fun and challenging boss to defeat though. But getting there felt kinda like a huge waste of time. Moder wasn't that challenging but even more so a feel of "waste of time" and I think that burned me out. Hope that makes sense.