The 4 "P"s of DOOM's Amazing Combat

There is something special about combat in the modern DOOM games. A single arena can feel like a rollercoaster of glory kills, weapon switching, quick decisions, and lightning-fast movement.

A useful way to understand that design is to look at one fight rather than a whole level. In DOOM Eternal's Nekravol Part II, an early combat arena takes place in a large symmetrical chamber built around a massive central structure. It looks more like a multiplayer map than a single-player corridor.

The arena has multiple elevation levels, side platforms reachable by ramps or bars, toxic pools below, and scattered resources such as ammo, armor, chainsaw fuel, and an overdrive power-up. Most importantly, it has a carefully staged sequence of monsters.

The fight starts with Imps, a Mancubus, a Revenant, and a few Zombies. Kill enough enemies and the second phase adds more Imps, Gargoyles, and then a Baron of Hell. Damage the Baron enough and a Pain Elemental appears. Damage the Pain Elemental enough and Whiplashes enter. Kill the right enemies and the final phase brings in a Doom Hunter, followed by Prowlers.

This trigger structure keeps the player from being overwhelmed by the entire enemy roster at once. At the same time, it means that slow target selection can create overlap. If the biggest demons are not handled quickly, several dangerous threats can stack on top of each other.

Across restarts, the broad rhythm is predictable, but the exact moment-to-moment flow is not. That gives the encounter learnable shape without turning it into a fixed script.

The first constant question is priority: which enemy should be focused on? Staying alive means deciding who is the biggest threat in the current moment.

In the opening phase, the Mancubus is large and dangerous, but slow, and its attacks can be made less threatening by targeting its launchers. The Revenant's missile barrage may be a more urgent problem. Later, the Baron of Hell becomes hard to ignore because it aggressively charges the player and forces constant retreat.

The Pain Elemental is another kind of priority problem. It can spawn Lost Souls, so killing it quickly seems sensible. But because it is slow and the spawned enemies are manageable, the more aggressive Whiplashes may demand attention first. The answer is contextual rather than automatic.

The second question is preference: which weapon or tool should be used? DOOM Eternal works because different monsters invite different responses without always creating only one valid answer.

A Mancubus is a large slow target, making rockets attractive. A small nimble Revenant is less convenient for that same weapon. The shotgun is useful when monsters push into the player's face, such as Whiplashes. The heavy cannon can pick off distant flyers. The Ballista is strong against flying threats such as the Pain Elemental. The Plasma Rifle is useful against the Doom Hunter's shield. The Chaingun can shred a Baron.

The broader arsenal also matters. Freeze bombs can stop Prowlers. Blood Punch can damage the Doom Hunter's shield. The BFG, Crucible, and overdrive power-up become emergency cards or planned bursts of aggression. The player is constantly switching tools because the enemy mix keeps changing.

Sooner or later, the player runs low on ammo, health, or armor. That creates the third question: preservation. How will resources be recovered?

The arena contains some pickups, but they are limited. The more interesting answer is that DOOM turns enemies into resource containers. Glory kills produce health. The chainsaw produces ammo. Flame Belch makes enemies drop armor shards.

Zombies are central to this structure. They respawn throughout the fight, barely threaten the player, and die quickly. That makes them a renewable source of health, armor, and ammo. In the middle of a boss-level threat, the correct priority can suddenly become a weak enemy because that enemy is the route back to survival.

The fourth question is position: where should the player move next? Many enemies punish standing still, and different threats demand different movement patterns. The Baron pressures the player backward. The Revenant's lock-on missiles encourage jumping and dashing. Without a cover system, survival depends on motion.

The arena supports that motion with multiple paths at ground level and in the air. Bars let the player move between elevated areas without touching the ground. Ramps, platforms, hazards, and open lanes create a navigable circuit rather than a static room.

The result is a fight where movement is not just evasion. Position determines which enemies are reachable, which weapon is useful, which resources are nearby, and which threat becomes urgent next.

These four questions can be summarized as priority, preference, preservation, and position: the four Ps. They are not solved one at a time. The player answers all four simultaneously and reevaluates constantly as enemies spawn, resources drop, and the arena state changes.

The decisions also feed into each other. Running out of ammo can hijack priority, turning a boss monster into tomorrow's problem while the player chainsaws a zombie. Choosing to attack a flying enemy changes weapon preference. Moving toward armor can expose the player to a Whiplash. Picking a route through the arena can make one target easier and another impossible.

That is why DOOM feels different from many shooters. Indistinct enemies provide little reason to prioritize. Two-weapon arsenals limit tool choice. Regenerating health encourages hiding instead of changing engagement style. Cover systems reduce positional thinking by making the correct answer obvious: get behind cover.

The system is powerful, but not perfect. DOOM Eternal sometimes meddles with the balance that made its predecessor feel so open.

Some enemies have weapon-specific weaknesses, such as feeding a Cacodemon a sticky bomb to stagger it. Other weapons can work, but the tutorialized weakness can make the encounter feel like it has one correct move instead of a broad set of tactical options.

The Buff Totem and Archvile create a similar issue. Because they can continuously generate super-powered demons, they almost always become priority one. Compare that with the Pain Elemental or DOOM 2016's Summoner: both are strong candidates for early destruction, but they can sometimes be ignored without the fight instantly collapsing.

Resource management can also become too loud. Lower ammo limits and the need to use Flame Belch for armor can push preservation so far forward that the player spends too much mental energy patching resources instead of slaying demons.

At their best, the modern DOOM encounters are a flurry of fast movement and tactical decision-making. They force the player to keep asking who matters, what works, how to recover, and where to move.

Those questions are answered in fractions of a second. A five-minute fight can feel exhausting because the player's brain has been kept on full alert the entire time. When the last demon drops, the intensity comes not just from speed or violence, but from the constant pressure of choosing well.