Cleared it.
I *wish* it was a carbon copy of Monster Black Market, but it isn't.
The game is very grindy. Use cheat engine to speed things up, you're not gonna miss much.
The art, while look nice, is very few. What you see on the preview images are basically it. The rest are pixel animation of only tentacles. Not much variation with the adventurers, either.
All in all, time-consuming with little reward.