Boss battles

The player navigates a dimly lit corridor with green walls and wooden structures, approaching a large, ornate wooden door with a demonic face. After passing the door, the player turns a corner and is immediately confronted by a large, skeletal monster with a red pentagram on its forehead, which then transforms into a group of small, red, horned demons. The player's health and armor remain at 200% throughout, and the player's weapon changes from a shotgun to a large, silver, multi-barreled gun. The setting is a dark, industrial-style corridor with stone and wooden textures.