Next Up Hero is a dungeon crawler action RPG where you have a choice of 11 ranged-based or melee-based characters to tackle dungeons called Ventures. Each Venture has four difficulties to choose from with four locations ranging from a tundra to a lava land. Levels inside the Ventures contain special gimmicks tied to them such as defeat a certain amount of enemies or watch out for falling rocks. At the end of every Venture is a boss, and once defeated, you can choose to end the Venture and collect your rewards or push onward to collect more rewards.
Source: N4G PC Next Up Hero review – ChristCenteredGamer