Am I right in thinking that you can place any die on the laser card to change the result of any other die?
I read that card as just changing a die, not that you have to consume a die to do so. The iconography on the card I think is just indicating that you can pick any side to match a die slot.
But it appears I'm wrong
The end of game happens immediately as the final boss is killed (you don't go through any other phases)?
The victory condition changes per scenario. I assume you're talking about the intro scenario? If so then yes, I read it as you win immediately.
It's great that the designer continues to support it with extra scenarios. I hope it continues to gain recognition!
Completely agree, this is a hidden gem.