Okay. I realize this is described as a "rage game," so I won't get too into the details of the gameplay... such as it is. I had to stop playing because it was hurting my arm (old injury, I can't mash keys like that for very long). All I'll say on that front is, the player's hurtbox is very large. You could do your players a kindness and make it smaller. Often I would get clipped by a collision box while our sprites were nowhere close to touching.
As for the goals of the Jam, the game is not running in 160x144 resolution, so that's a miss. It's also not very Gameboy-esque. And, despite the name of the game, I couldn't really say it felt like it was actually about a pirate.