In the area with the giant waterfall hiding a door, there is a block on a ledge that has the same long tetris code used on a door in that same area, the classroom in the tokyo-esque area, and also in the sky world where there is a statue that lights up in certain tetris shapes depending on what buttons you press. I figured out which buttons make which shapes, but it is still unclear exactly where or what on you are supposed to do the button sequence. Anybody help will be greatly rewarded as I have puzzle solutions to other anticube locations.

They are

Yeah, I found a block that displays the tetris pieces when you do the different button presses. I did the correct combination like 20 times and nothing happened.

Hint about the direction input puzzles

I am bad at spoiler blocks!

@MonkfishEsq said:

Hint about the direction input puzzles

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You have to read them 90 degrees on their side to the left (counter clockwise)

The 2 codes for the waterfall level are:

SPOILER WARNING: Click here to reveal hidden content.

Pillar: Left, LT, Right, RT, Up, A, Down, RT, RT

Wall: Left, LT, Left, Right, RT, Down, Up, LT

I am bad at spoiler blocks!

spoiler within a spoiler