Thanks so much for the detailed comment!
I'm not so sure about music disappearing, might be a web version thing, I didn't get to check for bugs in that version at all.
I completely forgot to implement audio settings, so that's on me.
I'm again not sure why the AI likes a certain side better, their code is extremely simple, just walk towards the nearest building, until in range basically. Maybe I just spawned more there?
I used to have a separate storm health bar, but I scrapped it when it broke with a change I made to the storm logic, and I didn't have time to fix it. The storms stop spawning waves once at least 3 crystals are destroyed, and the storm ends once all enemies are dead. The game doesn't make this very clear at all apart from one line in the instructions page, so I can understand the confusion.
This type of feedback is very useful, so once again thank you so much! I'm glad you had fun.