After first playtest I got very helpful feedbacks that I started another one, of course I made some updates according to feedbacks first.
I played my own game so much that, I didn't realize I made this mini-game so hard. It was quite shocking for me to watch people struggle that much. It was more like "catch me if you can" style mini-game instead "red light, green light" so I made some arrangements.
In previous version, after fight starts you just sit back and watch the balls hitting each other and accept your fate. To solve this, I include the player to fight with a little paddle.
You can control this paddle with your mouse or gamepad and heal your critters(green paddle) or give extra damage to enemy critters (red paddle), It's like "pong" game.
To add some personality to backpack I added some accessories to backpack, like some patches and key chains. I am planning to open some of them with achievements, just a concept right now.