I'm very happy that you enjoyed it, thank you so much for playing it! This is my first real attempt at making a strategy game and I'm quite proud of how well I've got it working.
The difficulty is something I'm still adjusting. The maps are quite short and there's no huge penalty for losing, so I'm hoping that the default difficulty setting will provide a nice curve to get new players started. This has been a point of discussion ever since the first private demo of the game launched and several big adjustments to the difficulty progression have already been made. I want to make the game as accessible to new players and as challenging for experienced players as I can, so this is something that I will certainly strive to balance out.