I really loved your video, incredible gameplay, you are very fun and charismatic.
there are check points in the game, they are round figures on the floor, they have a mirrored glow and have some symbols.
There is an item in the main menu that explains a little about the rules. but as it is in portuguese a lot of people are not accessing it. My fault.
Each Portal has a cloth next to it with the number of stars needed to activate them. These stars are collected with the pages you pick up during the game. each time you take a page a star disappears on Sky.
Thank you very much for playing my game. I was very happy and thrilled with his reaction. I will share your video.