My favorite part of a new 3D Mario game is testing his mechanics. They don't change so much or anything, but the last time that I picked up a 3D Mario game and played it extensively was a couple of years ago. For the first few hours, you get a sense of what Mario can and can't do, and then you can slowly see how many acrobatic moves that you can add to what you already know, and by the end of the game, everything feels great and you can take shortcuts in creative ways.
I'm hoping Luigi is in this because I got so good with him in those Galaxy games that I could shortcut large parts of some of the levels by abusing his long jump, but I only got that good after hours of testing the mechanics with Mario and then again with Luigi.
The motion controls in galaxy amounted to spinning, collecting stars, and the balance ball levels, some of the actual platforming and challenges were difficult. Mario 64 got hard, sunshine was hard, some moons in galaxy 1 and 2 were hard.
There is a difference in the challenge being finding a moon and in actually getting it. Walking behind a secret door to find a moon is not a challenge, getting a star in the clock world in Mario 64 is. That's what I'm asking, are there parts as difficult as the clock world in 64.
People are making this game seem like it's just hide and seek.
Tick Tock Clock was near the end of Super Mario 64. Most people are still somewhere in the first three or four worlds. Mario games usually start out easy and slope up in difficulty toward the end. Some of them don't get hard until after the end, like Super Mario 3D World where you have to beat it first and then all the unlocked stuff is the hard stuff. Same thing with Super Mario Galaxy 2.
I'm guessing that this Mario is built the same way as those. I can say that it's not hard at all, and I'm in Tostarena, but that's early in the game and like most Mario games, the early game is simple.