This game is so good! I love this type of 1v1 games with very simple design and a lot of options for conterplay and strategy. Simple pixelart you've created fits perfectly and music fits as well.
One thing I don't understand is what is the downside of using spearman over swordsman, it seems like every move he has is better, while they have the same cost.
Overall - cool little game with a lot of room for extra content if you ever decide to continue working on it (like unit types that attack with low values and move with high ones, so you can choose to build a more balanced team and so on).