CDO2:던전 디펜스

There are other Demon Lords, and you can purchase them with hourglasses. You can also rent them for a trial. Each Demon Lord has unique abilities. The important thing here is that since they are different from the basic Demon Lord, their operational abilities also differ. It's recommended to use them after accumulating a lot of points with the basic Demon Lord in the early game to significantly increase your stats. This will make the game easier.

Since it's a game where you just keep raising multiple characters repeatedly, it can sometimes be boring. When that happens, setting a theme for your rooms or your Demon King's Castle can make it more fun. It's like a challenge. Playing with a specific concept, like using only undead or only beastkin, makes the game even more enjoyable.