New Super Mario Bros. U Blind Walkthrough Part 42: Daring Design

That first stage was really fun! Quite creative too! Though these were all fun to run through though.

-Time Stamps-

Time Attack Challenges
0:00 Mini Mountaineer
5:00 Lurchin' Urchins
7:45 Penguin vs. Torpedo
8:51 Slick Slopes and Bullet Bills
11:28 The Haunted Propeller
12:59 Fliprus Crossing

Enjoy!