If you’ve been grinding through the brutal retro-inspired levels of Doom The Dark Ages, you’ve probably hit a wall at Doom the Dark Ages Chapter 14. Titled “The Sunken Cathedral”, this level throws every tricky enemy type, hidden trap, and environmental puzzle you’ve faced so far into one tight, unforgiving map. I spent three runs getting destroyed before I figured out the optimal path, secret unlocks, and boss fight tricks that make this level way less frustrating. This guide breaks down everything I learned, so you don’t have to waste hours repeating my mistakes.
Doom The Dark Ages Chapter 14: Pre-Run Gear and Loadout Tips
You don’t want to walk into this level with a loadout built for fast, open-area fights. The Sunken Cathedral is full of narrow corridors, ambushes, and swarms of corrupted acolyte enemies that attack in groups of 6 to 8, plus heavy knight mini-bosses that hit for 70% of your max health in one swing. I made the mistake of bringing my favorite long-range plasma rifle on my first run, and I barely made it past the first set of doors.
Your best bet is to prioritize close to mid-range weapons that handle crowds and heavy armor equally well. Don’t forget to stock up on holy ammo reserves before you start the chapter, since regular ammo drops are 30% rarer here than in earlier levels. You can buy extra holy ammo from the pre-level merchant for 200 gold a stack, which is 100% worth the cost.
You can skip the magic armor upgrade if you’re low on gold, too. Most damage in this level comes from quick physical hits that regular armor blocks just as well, so you won’t lose much by skipping the expensive magic variant for this run.
Navigating the Hidden Traps and Secret Paths
The first 10 minutes of the level are full of floor spikes, falling chandeliers, and fake wall ambushes that will catch you off guard if you rush. Most players follow the glowing candle path straight through the main hall, but that triggers three separate swarm spawns that you can avoid entirely if you take the left side corridor right after the first entrance.
Keep an eye out for cracked stone walls marked with red runes as you move through the level. There are three secret chests hidden behind these walls, each holding either a permanent health boost, extra holy ammo, or a rare enchantment for your weapons. I missed all three on my first two runs, and the permanent health boost made the final boss fight 10x easier when I finally grabbed it.
You should also avoid stepping on any dark stone tiles that don’t have moss growing on them. 90% of these tiles trigger floor spikes that hit for 40% of your health, and there’s no way to heal mid-fight in the next section if you lose too much health here. It’s slow going to check each tile, but it’s way better than having to restart the entire chapter over a silly mistake.
Beating the Chapter 14 Mini-Boss: The Corrupted Abbot
Halfway through the level, you’ll run into the Corrupted Abbot mini-boss, who blocks the door to the final cathedral chamber. A lot of players waste all their ammo on his shield, but he has a very predictable attack pattern that lets you take him down without wasting more than a handful of shotgun shells.
He starts every fight with three wide melee swings, then pauses for 3 seconds to charge a holy blast attack. That pause is your window to shoot him in the glowing red gem on his chest, which is his only weak point. If you hit that gem three times, he staggers and loses his shield entirely, so you can finish him off with a couple of dagger strikes.
Don’t stand in the light pools he summons during the fight, either. They drain 5% of your health per second, and they stay active for 10 seconds each. You can lure him into the pools too, though, which will deal damage to him over time if you position yourself correctly. I used that trick on my last run and beat him in under 2 minutes without using a single health potion.
Final Boss Fight: The Sunken Bishop Strategy
The final boss of Doom the Dark Ages Chapter 14 is the Sunken Bishop, and he’s easily the hardest boss in the first 15 chapters of the game. He has three phases, each with different attack patterns, and he can one-shot you if you get caught in his big AOE attack. The good news is that once you learn his pattern, you can beat him without wasting all your resources.
Phase one is simple: he throws slow-moving energy orbs at you, and you can shoot them out of the air to deal damage back to him. Don’t get too close during this phase, because he will grab you and throw you across the room for 60% of your health. Stick to the edges of the arena, and keep shooting the orbs until his health drops to 50%.
Phase two is when he summons four acolyte minions to fight for him. Ignore the bishop for this phase entirely, and take out the acolytes first, because they will keep spawning if you don’t kill them all within 10 seconds. Use your fire bombs here if you have them, since they can take out all four at once if you throw them right in the middle of the group.
Phase three is the final push, and this is where you use all your remaining holy ammo. His weak point is the cracked skull on top of his staff, and if you hit it 5 times with holy shotgun rounds, he will stagger and be open to a finisher move that takes out the last 20% of his health instantly. Don’t waste ammo on any other part of his body, because it will do zero damage.
Doom the Dark Ages Chapter 14 feels impossible at first, but it’s actually one of the most rewarding levels in the game once you figure out the tricks. The secret loot you unlock here, including the Holy Shotgun Enchantment, makes every subsequent level way easier, so it’s worth putting in the time to get that S-rank clear. If you follow the loadout tips, skip the unnecessary fights, and stick to the boss attack patterns we laid out, you’ll beat it on your first try without breaking a sweat. Next time we’ll break down how to unlock the hidden post-credit scene for Chapter 14, so keep an eye out for that guide coming soon.
