This is a 4.0-star Cipher Slitherlink puzzle; that is, a Slitherlink puzzle with a Cipher twist. Each letter stands for a digit between 0, 1, 2, or 3. Identical letters stand for the same digit, and different letters stand for different digits.
After my account was hacked, I pick up the puzzle, edited a few parts of it (including renewing the image), and re-post it with the same theme. WE WERE HERE. DO NOT MESS WITH US, or you will
DIE! have some trouble solving this.
And if you’re curious, no one hacked my account; I just make a theme for the puzzle.