I was initially confused because I couldn't see well and kept bumping into objects. I tried improving the graphics quality, but that didn't help. Then, I noticed a strange button in the main menu with a wrench symbol, which usually indicates game settings. Surprisingly, it led to instructions on how to play the game. After reading the instructions, I really enjoyed the game. I'm impressed by the echo localization mechanic; it's truly brilliant. I've played a few games on itch.io, but this one really impressed me. My only suggestion is to make accessing the game's command menu more intuitive. Otherwise, great work!