Hey no idea how I missed this comment, but thank you for playing! I did the audio effect on death using FMOD. I'm basically controlling a 0-1 parameter that controlls how loud each audio layer is (base, melody, drums), and also the low pass filter on higher layers that opens up the higher the parameter is. I completely agree that bloom could've been turned down a bit on those big bullets, and also like 2 rooms are pretty unbalanced in terms of difficulty, that's why you got stuck probably, sorry :P
Thanks again, and sorry for a late reply :)