Grim Dawn is the most fun I've had with an ARPG in years. The class system is very interesting and, as far as I know, unique to this game. Rather than just being a barbarian or necromancer or whatever other typical ARPG class you can think of, your class is determined by selecting any 2 archetypes. For instance, maybe you like being a pet class like necromancer, but you want to have a slightly more active play style than just watching your skellingtons paint the map red. So, you mix in the Nightblade (melee rogue) class at level 10. Your new, combined class is called a Reaper, and you have access to both skill trees, free to mix and match as you wish. Very interesting playstyles can emerge from creative pairings.

I am a casual player so I can't offer any perspective on the endgame or anything like that, but if you're looking for something to scratch the Diablo 2 itch with a fun twist on classes,you cant go wrong with Grim Dawn.

It's a VERY good spiritual successor to titan quest. I'll recommend last epoch too, if you like the genre and are interested also in multi-player (it has an offline mode as well)

Amazing arpg. My only gripe is that it feels dated in some aspects, but other than that it's fantastic.

I played it for 440 hours and I still don't feel done with it.

I have played it for a while, albeit shorter than some true veterans, and I am a little bit torn in my opinion about it. The customizations options are great and the story is cool and engaging. However, the game feels very much grindy overall and you have to win the game to unlock higher difficulty settings, which is a bit boring in my opinion. Also, the loot from some early bosses are better than what comes later for certain builds, meaning you have to return back to areas you have passed through and grind the same bosses again for better versions of the same loot that you already have, which is also a tad boring. I've also had some weird stuttering issues on Linux. Otherwise, great game and I recommend trying it!