My apologies, it appears I forgot the interact button above the door for clearing up such situations, and on the next update, I'll see if I can change the dash sound (of course) Thank you very much for playing my game!
I am so sorry, I'll first fix a bit of the lights in next updates, and probably upgrade the boss fight to make it more smooth, I'll also replace the sound effect (especially for dashing, because I agree it melts eardrums) Thank you so much for reviewing my game too! I feel honored