I dropped two stars for the hidden. Anyone can make a level hard by incorporating hidden elements but can you make a level hard or challenging with nothing hidden? IOW - take away the hidden and this level is not much of a challenge. I did like the fact that when B fell due to the hidden, B could get back on the slider and try again and didn't need a full restart after each fall - I like recovery points so thanks.
Another point - I know that you are new here as I looked up and this is your 2nd level. When I first started this level I wondered if tricks were required and since it's your 2nd I figured they were not. Do you know what auto pilot is? If not, here's a lesson: Note the video. Auto pilot is where you tap a spot and B runs there but if you change a location of a lift to where the tap was, then B will attempt to get onto that spot and B can go up one level in doing auto pilots. I've done another auto pilot at the end of the clip, where I tapped on the lift but moved it, this allows B to jump down or off of things. You don't need to incorporate this trick in your level but you should protect from it so players are forced to go around your intended path versus taking a shortcut with a simple auto pilot. If I recall correctly, your last level had a lift on the surface as well so B could get on that lift from the side as well. Something to consider when making levels. Spoiler: Auto pilot
Yes, with a second autopilot shortcut at the end, most of the level can be bypassed. You have to watch putting sliders right down on the white. It's easy to climb up onto them.
I guess I used the shortcut at the end as @cimarronline said. How do you get through the house the second time without falling off? I normally enjoy a bit of hidden stuff, but only when there are hints or little windows so you have a chance to guess what is happening in there.
Got it! I would go 4 stars for an experienced builder (just because of the auto pilot shortcuts), but for a second level this is brilliant! Great looking build and really interesting route.
thanks for the advice, now I understand how autopilot works I put the video with the solution below. a question: now I have changed the level to solve the problem, is there a possibility to replace it here without having to create a new level? Spoiler
@Andrea gerbillo - First, you should TAG a player if you are addressing them otherwise we may never know you've asked a question. To tag, add the '@' symbol and a few letters and the name will pop up. Here's your tag @Andrea gerbillo. 2ndly, you can't change the card here. You must delete the card and repost a new card. I wouldn't worry about the auto pilot in this level as you are new, just consider it for your future levels.
Very good puzzle. My initial solution was very quick but, after reading the comments, I must conclude that it was a shortcut. Finding the path to the win without autopilots is much nicer. By the way, I cannot download the revised version.