At times the difficulty can be hard but our coin's difficulty will fluctuate no matter the number of miners. Our coin has a cycle based difficulty, in other words the difficulty will get hard for a few hours then get easy for the next few hours no matter the number of miners. At the moment Celestial's main use is to mine but big picture our goal is to be as decentralized as possible and by only allowing solo mining with CPU's that achieves our goal.