Thank you so much for having a look at it and giving feedback! It really means a lot to me to have people play the things I make.
Challenging and stressful is what I was aiming for - although reaching a proper game over should be rare. If you enjoyed playing it - there actually is a bit of a narrative and progression, as well as an ending :)
I'm glad the style and sounds worked out - I'm new to game dev, but do have some programming experience. But I am completely new to sound and art stuff, thank you for feedback on that!