Jaguar Samurai
When you start this new game plus, part way through you'll find a bunch of items in a room you must go through. In there you will find two levels for splatter mode and Jaguar (playable character). Jaguar is a Samurai who can do five times more than normal damage but only has...
Challenge Mode
Complete every stage making sure to not skip over any when the path branches off and beat the game. The question marks on the main menu will now say Challenge.