I wish more developers would try to create games like this. Great game! One thing I did notice is when you kill a rat (with an arrow) and it moves it will prevent you from laying any more cards forcing you to reset the level. A tutorial would go a long way as well or even a small description of what each ability on the the cards do. Some more content is desperately needed or if you use this as the base for the next game it would be awesome. Some items you could add would be some mage abilities, also some items that had more of a passive ability instead of an active ability. An example would be if a pair of boots passively added +1 to any momentum card instead of adding 2 momentum cards.