Based on play and replay, it seems to be either Payday 2 or Borderlands 2.
Payday2, especially if you have tons of builds and DLC, is a fantastic brain-off mob shooter where you can slightly improve/perfect your build and gameplay with each run. For some reason it just works for me.
Borderlands 2: fun guns; solid story; visuals and mechanics that mostly hold up today. It’s just a good time and another skill-tree builder game where you get to feel like a god if you’ve assembled your skill tree right. The NG+ modes are a bit of a slog, but playthrough 1 is just a solid time.
Makes enough sense, as goofy as it sounds.
Part of the issue is that AAA still hasn’t learned how to manage and produce passion projects, which most great games are. They keep wanting to use what’s working elsewhere with no regard for what makes sense in their own game.