Oh, I have not played the game yet, was just reading the comments before deciding whether I wanted to play or not. If audio is the only instruction, that absolutely makes me not want to play, at all. I have sound sensitivity. I never play with audio.
All audio is also written as text in the HUD, but it may come as a bit dry without the voiceover.
That said, I'm planning to update the game next week, once the jam is over. One of the additions will be an extra HUD element where the mission will be clearly stated, and also signs in different areas to avoid ambiguous indications. You may find it more pleasant if you play it then.
Thank you for letting me know about potential issues, I will keep in mind that some people prefer to play without sound :D.
You can reduce the resolution and the graphics settings in the options menu, but I'm afraid UE5's lumen is quite heavy in any case. I will try to optimize performance in future iterations, but I don't know at the moment if I can lower requirements significantly or not. Thanks for trying it, I'm sorry it didn't work for you!