Sirus

When you enter the boss's area, there's a chance that the boss will block your path with black holes. If this happens, you'll only be able to reach the boss by losing all your healing potions, and even then, it's a gamble. It's possible to create a very complex route to the boss, where you can always reach it through a narrow path, rather than losing 120 chaos because you didn't think of something as simple as a completely enclosed perimeter in a narrow passage....