Awesome pieces of feedback, thank you so much! Sadly the audio is a cut corner because I didn't have enough time as I only joined for the last 24 hours...
The rest are really, really good points that were oversights. I feel like the explanations could have been done well with a slow start, where the player has time to experience what each thing does. Obviously the shields could have had a lot more feedback, the same applies to hit effect...
I tried to make a short intense game which really doesn't work well with lacking explanations AND lacking feedback, as it turns out.
This was really helpful, thank you for taking your time writing all that!