Enjoyed the game :)
I might have found a bug though, when you collect the chest drops during the fight, the amount of money that it is shown doesn't add up to the "score". the bricks chest is fine, it adds up to the total.
I noticed it because the total amount of money didn't feel right, then i checked 3 more times, and it kept happening.
I had 3k (3,000) money, got a chest (+136$) and the score kept being 3,030 (i killed 3 mice, since each gives 10$).
when the fight ends it would be nice if it would also show the amount of bricks and money the player got from the chest drops.
example :
70 kills - 700$
chest drops - 327$ - x19 bricks