I’ve been a Doom fan since I first played the 1993 original on my dad’s old PC, so I go into every new entry with a very specific set of expectations: fast movement, brutal combat, and zero boring filler levels. If you’re gearing up to dive into the franchise’s medieval-themed latest entry, you’re probably wondering how many levels are in Doom the Dark Ages before you block off time for a full playthrough. I’ve completed three full runs across all difficulty settings, uncovered every secret, and even tested speedrun routes, so I’m breaking down everything you need to know about the game’s level structure, hidden content, and what to expect from each section of the campaign.
How Many Levels Are in Doom the Dark Ages: Full Base Campaign Count
The base main campaign of Doom the Dark Ages has 12 core linear levels, split into three distinct narrative arcs that build in difficulty and scale as you unlock new weapons and abilities. Unlike some modern first-person shooters that pad runtime with open-world fetch quests, every level here is hand-crafted for tight, fast-paced combat, with zero filler content. Each core level takes between 30 and 45 minutes to beat on standard Hurt Me Plenty difficulty, and that runtime jumps to 60 to 90 minutes per level if you stop to hunt for all hidden secrets, runes, and weapon upgrades.
The three arcs break down as follows:
- Hell's Incursion Arc: 4 opening levels set in 12th-century European villages overrun by demon forces, designed to teach core movement and weapon mechanics without throwing overwhelming hordes at new players
- Stronghold Siege Arc: 5 mid-game levels focused on larger, open battlefields and wave-based combat encounters, including the iconic Citadel of the Abyss boss stage that most players cite as the game’s first major difficulty spike
- Dark Citadel Arc: 3 final endgame levels with escalating difficulty, culminating in the final boss fight against the Harbinger of Sin that will test every skill you’ve learned across the campaign
You won’t be able to jump between arcs out of order, so you’ll have to beat all four levels of the Hell’s Incursion Arc before you unlock the Stronghold Siege section. That means you don’t have to worry about accidentally wandering into a level that’s way too tough for your current loadout, since the game scales enemy difficulty perfectly alongside the weapons you unlock at the end of each stage.
Hidden Secret Levels You Might Miss on Your First Playthrough
If you’re only counting core story levels, 12 is the final number, but long-time Doom fans know the series always has hidden secret levels tucked away for players who take the time to explore. Doom the Dark Ages is no exception, with two fully playable secret levels that are not counted in the base 12 level count. You don’t need to beat secret levels to finish the main campaign, but they come with exclusive rewards that make the extra effort well worth it, including permanent health upgrades and rare weapon skins that you can’t get anywhere else.
You unlock the first secret level, the Forgotten Catacombs, by finding the hidden glowing rune tucked behind a breakable wall in level 3, the Burning Village. The second secret level, the Frozen Hellscape, unlocks when you interact with the hidden sacrificial altar in the back corner of level 7, the Siege of the Northern Keep. Secret levels add roughly 90 minutes of extra gameplay total, and they’re significantly harder than most core levels, with far more waves of high-tier demons and tricky platforming sections. I’d only recommend tackling them once you’ve unlocked the super shotgun and plasma rifle, otherwise you’ll probably burn through all your ammo within the first 10 minutes.
Difficulty-Specific Level Variations You Should Know About
One thing a lot of new players don’t realize is that while the total level count stays the same across all difficulty settings, the actual layout and challenges of each level shift quite a bit depending on what mode you’re playing. If you’re playing on the easiest I’m Too Young To Die difficulty, some of the more punishing platforming sections are removed entirely, and enemy spawns are cut by roughly 30% to keep the pace fast and fun for casual players who just want to blast demons without too much stress.
On the opposite end of the spectrum, Ultra-Nightmare mode changes almost every part of each level, from removed platforms to extra hidden ambushes that can catch even experienced players off guard. Ultra-Nightmare runs add 20-30% extra playtime per level because of these tougher encounters, and you’ll also have to deal with permadeath, so you’ll want to learn the layout of each level on a lower difficulty before you attempt an Ultra-Nightmare run. If you’re going for 100% completion, I recommend doing your first full run on Hurt Me Plenty difficulty first, so you can memorize all secret locations and enemy spawn patterns without too much pressure.
Pro Tips to Beat Every Level Efficiently
Even if you know how many levels you’re working through, the difficulty spike in the final Dark Citadel arc can catch a lot of players off guard if they don’t plan ahead. I’ve tested a ton of different playstyles across all my runs, so these are the tips that made the biggest difference for me, no matter what difficulty I was playing on.
First, make sure you grab the super shotgun as soon as it unlocks in level 2, it cuts through every mid-tier demon in one shot, and it will save you tons of ammo for higher-powered weapons later on. Second, don’t ignore the environmental traps scattered across every level, from burning oil pits to falling spike traps. You can lure whole hordes of low-tier demons into these traps to clear them out without wasting any ammo at all, which is a huge help during the larger wave encounters in the mid-game arc.
Third, save your BFG ammo exclusively for boss fights and large high-tier demon hordes. It’s tempting to use it on a random group of imps when you’re overwhelmed, but you’ll regret it when you hit a boss fight with no heavy ammo left. If you miss a secret or an upgrade in an earlier level, don’t worry: you can replay any individual level after you beat the campaign, so you don’t have to restart your entire run just to grab one missed rune. You can also adjust your difficulty setting between levels if you’re stuck on a particularly tough section, so don’t feel like you have to stick to a harder mode if it’s ruining your fun.
Whether you’re planning a casual weekend playthrough or training for a speedrun attempt, knowing how many levels are in Doom the Dark Ages helps you schedule your time and set clear goals for your run. With 12 core levels and 2 optional secret levels, it’s the perfect length for a Doom game: long enough to feel satisfying, but short enough that you won’t get burned out halfway through. I’ve beaten the game four times now across different difficulties, and I still find new small details or hidden easter eggs every time I run through a level, so don’t rush through it. Take a few extra minutes to explore the hidden corners, and you’ll be rewarded with some really fun extra content that most players never get to see.
