I abhor all mouse-based games that require you to stop moving to attack. There's just something about that mechanic that I will never enjoy no matter what. I've tried Diablo, Titan Quest, etc. multiple times and have always come to the same conclusion: you can't (easily) dodge enemy attacks while also attacking yourself, which is irritating to no end. (I wonder if that's why I love the independent attacking behavior of units in Total Annihilation...)

Anyway, glad you've found it to be fun. I'm still on the hunt for any similar ARPG that's more twin-stick in nature, though.