This game is truly unique, and I appreciate the idea and the implementation of the theme. The art style is also impressive, even if it's premade assets. It still adds to the overall appeal. Additionally, the sneaking mechanic gives me a classic Metal Gear feel, which is nostalgic and enjoyable.
However, I do have a complaint regarding the sneaking mechanic. It feels almost impossible to successfully sneak past enemies, mainly due to the size of the echos and the lack of depth perception to identify enemy positions. Moreover, the hiding into my rock form rarely works, as I often end up getting detected or glitching out when enemies push me into walls. Like others have mentioned, this issue forced me to resort to running through everything to win, which is unfortunate and takes away from the intended stealth experience.
Overall, good job on the game! I hope you consider coming back to improve on this project because I see a lot of potential in it. Addressing the issues with the stealth mechanics and fine-tuning the gameplay would greatly enhance the overall experience. Keep up the good work!