Thank you for your support, and I'm glad you enjoyed the game!
About the difficulty, it can be tricky because everyone has a different perception of it, and it can be hard to get an objective view. I would like to offer more challenging options though, so I'll keep your feedback in mind for future updates. Anything specifically you felt was too easy or otherwise feel like commenting on?
I was constantly losing buildings. I must have rebuilt my mills a dozen times. I never used more than a single of each military/support building. I didn't bother with walls until day eight or nine and purchased maybe three upgrades. I know I wasted a lot of time, and kinda put off taking down the cemeteries.
I finished the game on day 13, 30 souls under my command, and having only harvested a very tiny portion of the map. I dunno what your intended playtime was, but I feel I just kinda derped around and accidentally happened upon and beat the final level. The shades stealing your guys was neat, but this ended up being far less dangerous than something that could actually deal damage.
