I definitely have to add another vote for Celeste. The mental health theme was incredibly well done and it's one of the most memorable games I've ever played.
Dishonored 2. Haven't played through much of it because my laptop is a bit weak, but loved the first one.
I'm very much looking forward to Hades 2, and hope it won't be too much longer before we see some more news on it! I would like to try Transistor sometime too, as I've heard good things about it.