Hey, JamesMiller13! Glad you had fun with our game and found the movement mechanics enjoyable! Just to offer some clarification, the black square that occasionally covers most of the arena is a bugged art asset that doesn't properly render in the current build. You can imagine that a large pool of lava forms around the eye, making it dangerous to approach. If you want to survive and make it to the other bosses, I'd recommend hugging the edge of the arena and eventually the attack will end, allowing you to continue your onslaught. Either way, thank you very much for your feedback! :)