I really like the art style and had fun with the idle game. The shop upgrades is really balance, well done.
The only feedbacks I have is sounds attack is abit overwhelming when you reached the end with alot of rookies. I suggest create a Sound manager that other nodes can call the play sound function, this allows you to keep track and limit how many sounds play at a time.
For 1 week, you did a good job! Recommend to add some raining lofi musics and City visual changes as game progressed for your post jam update.
*Ps. I thought I was the only one submitted a mobile game.