WANDERING

To skip all text use LKM or space 

AD - to move 

E - to change viewing angle

 And that's how we interpreted the restriction /one button - two actions/ One button is E. 

By clicking on this button, the character changes his world for himself, dividing it into two. Now, when he performs actions, he performs them in two worlds at once. One button = two perceptions of the world /actions/ 

Who did what:

Hhamori - all visual, a bit of sounds.

kornikola - all code, sounds.