The maser beam looks awesome. And I was ambivalent toward the Giant Enemy Crabs until you showed us one of them being blasted apart. I'm on board. Actual crab blood has hemocyanin instead of hemoglobin, so it would be more of a dull blue color, but there's no need for that to influence an artistic choice. Maybe a factoid to file away in case it's useful later for dialing in how the game is tagged on Steam, even when the supposed "gore" is pixel art.