I got around to getting all 5 Profile Stars on New Super Luigi U

IIRC I never used Nabbit (basically makes you invincible to most things) to fully beat a level.

Fire Bar Swing (Superstar Road-6) very well may be the hardest game in the NSMB series. For those who haven't played it, it's basically a level with giant fireballs that you have to start running at a very specific point and almost never stop or get hit. If you get hit, the fire bars most likely won't allign correctly and you'll lose. To get the last Star Coin,



I didn't even bother to 5-Star NSMBU yet (or any other NSMB game), so maybe I'll replay the others.

https://miiverse.nintendo.net/posts/AYMHAAACAADMUKl5q4ByCw