I'm still very impressed how it got programmed into a gameboy rom. It's nice and self-contained and plot twists are always good, but it appears the best option is to always sacrifice your crewmates, especially the alien one, this way you won't die in the post credits. 

You're keeping that Mouseman game in development too, right?

Only problem I can think of is that the basic fish spawned by the first boss/later common enemies cannot be eaten it seems, even though you can eat the same-looking ones earlier. Gives a contradictory impression. But other than that, amazing game.