You begin 'Boggy Creek' in a desolate, swampy area, similar to E2M2 but often more expansive and dangerous. This level serves as a prelude to Tchernobog's domain, featuring a mix of familiar and tougher enemies.
- Swampy Start: Clear the initial Cultists, Fanatics, and Zombies. Watch out for deep water and Gill Beasts.
- Dilapidated Structures and Caves: Explore the various shacks, cabins, and cave systems. These often contain ammo, health, or keys.
- Increased Enemy Density: Expect a higher density of powerful enemies, including multiple Fanatics, Cultist Priests, and Death Shrouds.
- Finding the Keys: You'll need to find keys (e.g., Skull Key, Spider Key) to unlock various structures or activate mechanisms. These are often hidden in obscure corners or guarded by large groups of enemies.
- Environmental Puzzles: You might need to activate a pump to drain a section of the bog, or use a makeshift bridge to cross a wide expanse of water.
- Exit: The exit is typically a path leading out of the bog, often into a more demonic-looking structure or a portal, once all objectives are met.
This level requires careful movement and efficient enemy clearing. The Tesla Cannon and Life Leech are invaluable for dealing with the increased enemy density. Conserve your most powerful ammo for the tougher encounters.