I was thinking about adding some sort of "instant leave" button or something when you've cleared everyting, but it feels cheap, we'll see if I can come up with something better. I will add an options letting you have numbered slots, along with being able to toggle other visual things. Thanks for the feedback!
The healer can heal 2 times, and it gets refreshed on enemy turn. It will go towards a enemy in need of healing on enemy turn and heal them, but on the player's turn it can only heal nearby enemies.