It’s not, actually, because the music preference has no ordering – it’s just a series of yes/no flags for each track. Besides, the poll isn’t showing a strong preference, and I personally think it would be repetitive to start off with the same music all the time. Perhaps a better solution would be to start off stage 1 with a random track, and then cycle through them for subsequent stages, but even that would require changing how the music preference is stored.
These are two different bosses, so there is no requirement for their mechanics to match.
You’re not meant to destroy the low barriers because that breaks the wave. That’s why some of them are indestructible. Ideally, all barriers on that wave should be indestructible.
It is. I just removed the word from the game to avoid confusion.
That’s always the case. That’s why missions have two difficulties: One for the starting wave, and one for the ending wave. Everything in between is linearly interpolated. So, if you keep a calculator by your keyboard, you can work it out yourself. 