Arrow keys to move Space to yell (This sound echoes off of walls and spikes) Spikes are pointy and walls are flat. There are no slopes, so anything that isn't straight up/across will probably be a spike.
Story: You're a person in a dangerous world filled with challenges, and worst of all, you can barely see. To go buy a new pair of glasses, you will need to avoid danger with only your hearing to guide you.