I like the idea of scoring after beating a room, found a way to cheat it though. The sequence of rooms is the same and you can get into a corner and just spam your movement keys in a circle and you will continuously progress through rooms. on my third try I got 67, and could get much higher if I tried dodging as well, was just spamming movement. Maybe have the player spawn in the center? or require a certain amount of kills before it lets you change rooms? or randomize the sequence of rooms?