In this update, I have fixed a lot of minor bugs. And added a couple of new things:

1. Now the characters have their own unique voice in the dialogues! (unfortunately not a voice acting, just a unique typing sound).

2. Now enemy projectiles fall down if you blocked them. (just like the original NES game!)

3. Ported to Linux and Mac. I cannot test them, so please post a comment if there is anything wrong with these versions.

Right now I am working on the sewer stage for Liquidator. I have already made all the enemies for it and will soon be building it. Perhaps I will post screenshots and gifs soon. Thanks for your support!