Cuphead

Hand-drawn 2D platformer in the style of 30s cartoons. 2D Dark Souls as the fans refer to the difficulty of this one. It took developers 6 years to create and polish their magnum opus. Cuphead is a classic run and gun adventure that heavily emphasizes on boss battles.

Play as Cuphead or his brother Mugman that signed a deal with the devil and know needs to bring the master souls of its debtors. Players can go through the campaign single-handedly or with a friend using built-in co-op capabilities.