I’m quite bad at leaving something alone, aren’t I?

Someone should hire me to fix their performance issues so I have less free time this week.

Changelog

• fixed: music volume slider only worked for menu music
• made missiles a bit cooler
• lots of boss fight tweaks
  • bosses now rage every [portion] of their health bar lost
  • in rage, bosses are invulnerable and do more attacks
• defeating a boss no longer clears the arena - you have to do it!

The “boss becomes invulnerable” trope is a pacing hack and I’m not sure how I feel about it, but for now it at least means that boss fights are, on average, a bit less pathetic compared to preceding waves of enemies.