It's surprisingly decent. I avoided it because I really don't like isometric games and it seemed really janky for a modern title, but it was pretty fun once I got the hang of it. Unfortunately it's not quite finished and missing a decent amount of features. The next beta adds a ton to the game but multiplayer isn't stable yet and thus isn't available without mods, which is unfortunate because the game is much better with friends.
If the game is the sort of thing you're super into, it's worth picking up now. Otherwise waiting for the stable beta 43 would probably be the play.