Full 3D Dungeon for Medieval Game with 2 Final Boss

Hello, I am looking for a 1st person point of view for a 3D Fire Dungeon. This dungeon will contain 20 images all in first person 3D ... I want the dungeon to have the fell of being in Hell.. Fire Ceiling.. Burned rock floors.. Also its to have 2 paths.. one to the right is a water path that leads to a final boss chamber. A Dragon sitting on a island.. The second path leads to numerous room and a final room with the Fire Daemon Boss.. The dungeon needs to be completed with the 2 final bosses in the images and they need to be separate images. Thanks