Very good entry! It’s an excellent concept for a roguelike and has a lot of potential. I really hope you continue working on it. The art style is great too.
One thing I would add is a planning phase where the player has time to place their units before pressing a button to start the battle. I felt like the units attacked as soon as I placed them, so I didn’t have enough time to think or plan my strategy.
Overall, this is a very promising and enjoyable game. Great work!