I finally finished the shadow dragons.
That concludes the base game monster groups. The bloody beasts for some reason nearly took all wind out of my sails in terms of painting. Happy enough with the result, but for various reasons I didn't enjoy painting them. They're comparatively large for starters and nearly completely consist of soft, rounded curves, which I found hard to highlight well. Also had to repaint the wings after realizing I just couldn't make my initial idea for them work and had chosen a poor color combo.
Hopefully the four remaining base game heroes and lieutenants will be more enjoyable!