Gutsy is right Mikael. And go the Swedes!
It is really very good, albeit confronting. And the way the choices work is very impressive.
Re the character, as indicated I took it to be a reflection of the black dog that is depression, but also a desire not to imbue it/him/her with any defining characteristics whatsoever. This can affect anyone, and the black block doesn't allow the depiction to detract from that.
Or so I thought