It's on my watchlist
How long is it?
I finished it in 7 hours and 15 mins, although I didn't get many of the collectables or side content during my first playthrough. Each chapter has a 'B side' which you can unlock too, plus there's an extra chapter that you can unlock by finding some of the side collectable things in the main game. So even though I've finished the story I think I haven't even played half the game yet. (Well I just looked it up and competitionist playthroughs take an average of 32 hours, so I definitely have a lot left to do)
Each chapter is extremely different as well. The core of the game is your jumping and dashing abilities being used for platforming, but there's also other mechanics which are completely unique to each chapter. It constantly feels fresh, and is constantly very challenging. Its a good kind of challenging though, its kind of like souls in that you're supposed to die to learn a bit more about how to complete the section you're stuck on. Every death feels like a lesson rather than a failure, and it feels like it was you messing up, rather than the game being bad/ annoying, because the controls are so tight and responsive.