eu acho engrassado a reação das pessoas.

I can try to explain pressure. I realize that it is a bit of a complicated system, but it allows for so much more complexity and difficulty in the later puzzles.

Basically, if you mix two of the same color together using the pressurizer, you get a higher pressure color. (Red + Red = 2 Red) You can do the same with the depressurizer, but in reverse. (3 Green = 2 Green + Green)

Functionally, you have to label pipes as different pressures by using the two pressure labels (otherwise it is impossible to ascertain by looking what pressure a pipe is)

Finally: you cannot mix and separate colors while they are pressurized. For instance: 2 Purple has to first be split into Purple + Purple, which then each has to be split into Red + Blue + Red + Blue, then it can be combined into 2 Red + 2 Blue.

Thanks ! :-)
A hint for the "Occupied" Medal : you must finish the "Herdsman" ending first ;-)