Great, thanks for playing! Very little of the visual art is original (mostly a bunch of the UI and some of the environment art), the portraits were from the same artist's assets (Tyler Warren), although with only a little bit of editing here and there - he might call them "monsters", but I call them friends and aliens =). I've updated the page to better attribute the portraits to him now.
I'm glad you liked how it all came together, I really liked how the dying/recruiting/retiring ties into the story and setting, but not everyone likes their characters leaving suddenly on them ^_^. Thanks for posting a video (and sharing bug report details), I will have to check it out later!