In the final mission of Doom Eternal: The Ancient Gods Part 2, Immora, there are several secrets and collectibles to uncover to achieve 100% completion. Below is a guide to help you locate all the hidden items and complete the level fully. Phase Breakdown Phase 1: The Dark Lord mirrors your abilities, including dashing and using similar weapons. Wait for him to flash green during his attacks, which signals an opening for a counterattack. Use precision weapons like the Ballista or Heavy Cannon to deal significant damage. Phase 2: The Dark Lord summons wolves that attack you. Use the Plasma Rifle or Chaingun to quickly eliminate them while avoiding damage. Continue focusing on counterattacks when he flashes green. Phase 3: He spawns additional enemies to overwhelm you. Use crowd control tools like Ice Bombs and the Flame Belch to manage them while keeping your focus on the boss. Maintain mobility to avoid being cornered. Phase 4: The Dark Lord becomes more aggressive, with faster attacks and more frequent summons. Stay patient, wait for his openings, and prioritize survival by collecting health and armor from defeated enemies. Key Tips Timing is Crucial: Only attack when he flashes green; attacking at other times will heal him instead. Resource Management: Use chainsaws on fodder demons for ammo and keep an eye on health pickups. Weapon Choice: The Ballista, Super Shotgun, and Heavy Cannon are ideal for dealing damage during counterattacks. Mobility: Constantly move to avoid his melee attacks and maintain distance from summoned enemies. Secrets and Collectibles in Immora Codex Entries: There is one Codex Entry in this mission. It is located near the start of the level, shortly after you exit the first combat area. Look for a glowing green page on your path. Extra Lives: Extra Lives are scattered throughout the level. One is found near a ledge after a platforming section. Look for breakable walls or hidden ledges to uncover them. BFG Ammo: BFG ammo can be found in hidden areas or during combat sections. Keep an eye out for glowing icons in hard-to-reach places. Secret Encounters: Immora does not feature traditional Secret Encounters like earlier missions, but completing all combat challenges and exploration objectives is necessary for 100% completion. Exploration: Look for hidden platforms and breakable walls throughout the level. Some areas may require precise jumps or dashes to access. Combat Challenges: Completing all combat encounters, including optional ones, will contribute to your demonic corruption bar, which is essential for 100% mission completion. Preparing for the Fight Choose Your Loadout Wisely: Ensure you have a well-rounded arsenal, including the Super Shotgun, Chaingun with Mobile Turret mod, Rocket Launcher, and Sentinel Hammer. The Super Shotgun is excellent for stunning the Dark Lord and his minions, while the Chaingun's high fire rate can deal significant damage when he's stunned. Farm Extra Lives: If possible, revisit previous levels to farm extra lives. These can be crucial for surviving the fight. Strategies for Defeating the Dark Lord Initial Phase: Start by using the Super Shotgun to take out the wolves that accompany the Dark Lord. This will give you an opening to hit him and stun him. Extend the stun with your Sentinel Hammer. This will allow you to deal more damage without interruption. Dealing Damage: Use the Chaingun with Mobile Turret mod to rapidly drain the Dark Lord's health while he's stunned. This mod provides a high fire rate, making it ideal for this phase. Alternatively, the Super Shotgun / Ballista combo can also be effective. Rapidly switch between these two weapons to maximize damage output. Managing Minions: As the fight progresses, the Dark Lord will summon zombies and larger demons. Use Glory Kills on zombies to recharge your Sentinel Hammer. For larger demons, use the Rocket Launcher or Sentinel Hammer to quickly dispatch them. Avoiding Attacks: The Dark Lord will use a Shield Bash attack, indicated by his shield glowing. Strafe to the side to avoid this, as simply jumping back won't be enough. He will also throw grenades. Jump over these and watch for indicators to avoid taking damage. When he summons spirits of large demons, focus on taking them out one by one before returning your attention to the Dark Lord. Defensive Play: Play defensively by constantly moving and using double dashes to avoid his attacks. This is especially important when he brings up his shield. The only counterable attack is when he swings his sword after turning his body left. Be prepared to dodge other attacks. Achieving 100% Completion To achieve 100% completion of the fight, ensure you've collected all relevant collectibles before entering the final battle. Since this is the final fight, focus on executing the strategies above flawlessly to emerge victorious.