There are many game modes to attempt, but you will need to progress through the game by leveling up. When you level up, you can also assign new skill points, or level up stats with gold. There is even an adventure mode, a tower of trials, and many other challenges. For example, trying to hurt a dragon, or joining a guild. This game offers a lot more, like events, unlockable costumes and other things, some costumes can be purchased with diamonds. I will let you find the rest out on your own.