This one is right on the edge of being a 4-star game for me. So very close, but I just couldn't quite pull the trigger on it. Consider it the best of all the 3-star games that I've played as of IFComp 2020.
This story seems very linear, though I've only played it once, with choice really only allowed at the most pivotal moments. It would work really well as a visual novel as it seems to fit that genre: comic book-style hero vs. villain. You get to see the story play out from both of their perspectives as they stop fighting and start trusting each other.
The writing is above average, but could use a little more polish. The presentation of the text I think also needs so work, as several times during rapid-fire dialogue I would get confused as to which character was speaking. Perhaps more indentation and a few "said" tags at times would alleviate this. Also, despite not having much choice, there was a lot of clicking involved. You don't get much of the story before you have to click some of the text to flip the page. I started to replay it right after finishing it, but all the clicking to just get to the first choice made me decide to save a second playthrough for another time. Perhaps the text is kept short so as to not obscure the backgrounds (what appear to be stock images used to represent the various locations). While I did appreciate the backgrounds to help aid in establishing the setting, perhaps after the opening line of a scene the text could then be displayed in larger chunks. I also think it would be wonderful if the studio was able to get custom art of each of the settings, though I realize that is expensive.
I think the story was just a bit too long, it probably could have had one less (Spoiler - click to show)coffee shop -> house -> lair -> battle cycle and still had the same impact. Also, the ending I got, one of the "good" ones, I think just barely didn't stick the landing. It was satisfying, but I had the feeling it could have been a bit more.
Sorry if this review seems overly negative, I don't mean it to be. Most of my criticisms are small and perhaps picking at nits too much. I really liked this story and the characters especially. I felt the mood change between them (especially from Promethium's perspective) and my heart warmed with theirs. I also felt the tension at the moments it felt like it all might unravel. The lesson to be learned from the characters is also an important one for this day and age.
Well done! I look forward to playing this again one day and to the next project to come out of the Storysinger studio.