Kinda an interesting setup for a game, the title and the gameplay reminds me of Cobb Can Move. Not really sure why the lantern going out would make the crabs charge you, since they seem perfectly fine with attacking when it's lit anyways, so it's not really warding them off. The skull mechanic and collecting the boat pieces is neat, but there are some design things that make them not combine super well unfortunately.
The hitboxes seem very disjointed, the crabs can catch you even when they have barely appeared on screen, making the skulls kinda useless since you have basically no time to stun them. And when a crab is stunned, if you anywhere near their vicinity they'll catch you anyways, making it really annoying to try to stun and go around them.