Cool game -- I liked the narrative, and it fit the theme wonderfully! I'm glad the slime is back being a super villain :)
As a side note, there was minor bug which I'm not sure was intentional. If you press space, e, and enter all the at the same time a couple of times, you can beat the fishers in a second or two. It doesn't detract from the experience though. It is still a very fun game with engaging game-play!
My compliments to the artists by the way, I loved the style. Keep up the good work!