Silent Trench

You're going into a facility deep in an oceanic trench. No light can reach you down there, and neither can anyone. Your visor is your only way to see. It sends out a sound and gives you a snapshot of your surroundings. The snapshot doesn't update. It shows how things were when you took it, and after a few seconds it fades. You're not always alone. Your visor can be heard, and so can your footsteps and the doors you open. Make each look count. Search the facility for logs and piece the story together yourself. Solve puzzles to open the way forward, and uncover secrets hidden off the main path. Good luck.