This is the final level of Episode 3, culminating in the boss fight against Cerberus. You'll navigate a massive, ancient temple or fortress, often with lava pits and intricate architecture.

- Temple Entrance: You'll start outside the temple. Clear the initial Cultists, Fanatics, and Gargoyles. Look for the main entrance, which might require a key (e.g., Moon Key) or a switch to open.
- Navigating the Temple: The temple is a sprawling complex with large chambers, narrow corridors, and elevated walkways. Expect heavy resistance from all enemy types encountered so far, including multiple Gargoyles, Stone Gargoyles, and Death Shrouds.
- Lava Pits: Many areas will feature deadly lava pits. Avoid falling in, as it's instant death. You might need to activate bridges or platforms to cross them.
- Puzzle Elements: This level often features more complex puzzles, such as activating a sequence of switches, finding hidden buttons, or manipulating environmental elements to open new paths.
- Key Hunt: You'll likely need to find one or more keys (e.g., Dagger Key, Eye Key) to unlock the path to Cerberus's lair. These keys are usually in heavily guarded areas or at the end of a challenging puzzle sequence.
- Preparing for the Boss: As you approach the final area, you'll typically find a generous supply of health, armor, and powerful weapons (e.g., Tesla Cannon, Life Leech ammo, Dynamite). Stock up on everything you can carry.
- Entering Cerberus's Lair: Once you've found the final key or activated the last switch, a large door or portal will open, leading to Cerberus's arena.
- Boss Fight: Cerberus (See 'Boss Guides' for detailed strategy).
- Victory: After defeating Cerberus, the episode concludes. You'll be treated to a brief cutscene and then proceed to Episode 4.
This level is a true test of your combat skills and puzzle-solving abilities. Conserve your most powerful weapons for the boss fight, but don't hesitate to use them against the numerous powerful enemies leading up to it. Explore thoroughly for secrets to maximize your resources.