As Pressgoal mentioned, I could not get the game to start initially but I finally got it to work by pressing/releasing both buttons at the same time.
The concept is very interesting, how to have four directional movement with only two buttons :) I found the controls a bit difficult as there is no way to move down without first moving left, and no way to move up without first moving right. I guess that was part of the puzzle though and I'm not sure how that could be improved tbh.
The art style was basic but clean and easy to understand, and the voice audio effects were amazing ("CLICK" actually made me laugh out loud haha)