That would work if there was no distinct source for the destruction, like an earthquake. My idea is not scripted though but real-time.
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Possible spoilers: My miniboss will be a soldier swinging a big-ass flail. After swinging it around for about 4 times it then lunges the flail towards the player. Whatever wall is hit is destroyed. So it is very directed destruction which the player can mostly control if they wanted to. I already have the basic mechanic done. No it is just a matter of having the right graphics.