Death's Door is the new boss battler from the makers of Titan Souls

Untitled Goose Game cast you as the naughty resident of a parochial village, and it only makes sense that a game in which you play as a crow sends you into some strange demon dimension. So it is in Death's Door, in which you control a crow trying to retrieve their "assigned soul" by battling beasts and demigods in a "realm untouched by death."

It's from the developers of Titan Souls, and there's an announcement trailer below.