Congrats on the game!
You pretty much hit the ‘trust no one’ spot on with this.
Couple things I feel are worth mentioning, if not as an improvement for this one, to keep in the back of your mind for the next one.
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I would suggest you have the selected power-up card be moved to the front (in the z-axis, so its drawn on top of the others), or have some sort of pop up, on selection or hover to the card can be properly read. And some of the cards could do with a more detailed description of their effects.
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The black background for the cards was a poor choice with the black font for the notifications.