Complex sentence: The gameplay uses first-person navigation of dungeons and turn-based battles against demons: demons can be recruited as allies by talking to them rather than fighting them, and two to three demons can be fused to create new demons.
Split into simpler sentences: The gameplay uses first-person navigation of dungeons and turn-based battles against demons. The player can recruit demons as allies by talking to them rather than fighting them, and two to three demons can be fused to create new demons.