Masking the total environment resilience is a great idea, very true to life. As well as your shoot the moon mechanism of flipping the scoring mechanism if the threshold is reached.
One other thing you have going for you is that monochromatic art style. You can use it to give the player visual feedback on their progress or effect by shifting the hue on a gradient. If you did the art initially on a greyscale and then applying color based on impact or score, maybe between red and green or whatever then brightness or contrast based on money or whatever.
I'm also curious if adding a random element like the cards payouts and penalties are on a range with a dice roll. Things to think about .