Since a few people have picked this up, I firgured I make an official post about it. Grim Dawn is a grimdark fantasy ARPG that plays like a combination of Path of Exile and Titan Quest. It has some frankly insanly detailed character building based on the two class combo system. There are a staggering number of skills and builds, so it can be played pretty much how you want. Some playstyles are more meta than others, but pretty much anything you can think of is viable. Steam Page: https://store.steampowered.com/app/219990/Grim_Dawn/ And a helpful beginner's guide: https://gameplay.tips/guides/5282-grim-dawn.html
An example class skill tree. Active skills are square, passives are circles, and skill branching off a main path are mutators. In addition, you get Devotions, which allow you even more passive and active skills, and is based on opening nodes of constellations. PLUS, even more skills come from items and sockets. So you can really build any kind of character you can think of.
