Once Human weapons guide: your weapon choice can make or break your survival. Mastering the arsenal is the difference between clearing endgame raids and dying repeatedly in the Nalcott wasteland. This guide covers weapon types, the best guns per stage, crafting, upgrading, and seven proven combat strategies that work at every level of play. This loadout guide is designed to help you choose the best guns and builds for every stage of the game.
You can visit the official Once Human website for more details about the game.
Once Human throws players into a dangerous post-apocalyptic world filled with mutated creatures and powerful weapons. If you’re just starting the game, make sure to check out our Once Human complete beginner guide to understand the core mechanics before diving into weapon builds.
Once Human weapons guide: every weapon type explained and when to use each one
In this Once Human weapons guide, understanding your arsenal is key to maximizing your damage and survival. Before choosing the right weapon for your build, it helps to understand how the current Once Human arsenal compares in overall power. The following tier list ranks the most effective weapons based on damage output, versatility, and late-game performance.
In this Once Human weapons guide, there are six main weapon categories, each serving a distinct combat role.
Assault rifles: the all-around backbone
Assault rifles deliver consistent medium-range damage and are compatible with the widest range of mods. They shine in open-world exploration and group content but lose effectiveness at extreme ranges without a proper scope upgrade. The go-to choice for players who want one weapon that handles everything. In this Once Human weapons guide, assault rifles remain the most versatile choice for most players.
Shotguns: dominate close quarters
Built for close-quarters devastation. A single burst from a pump-action shotgun can stagger and delete elite-tier enemies before they react. Pair them with high-stamina builds for aggressive play inside buildings and tunnels.
Sniper rifles: maximum reward for skilled players
High risk, maximum reward. Snipers require positional awareness and a stable crouch stance, but their critical multipliers make them the go-to choice for boss weak spot targeting. Essential for PvP and long-range threat deletion.
Energy weapons: the anti-deviant specialist
Unique to Once Human’s lore, energy weapons bypass conventional armor but require energy cells instead of standard ammo. They deal bonus damage to Deviated enemies, making them a smart secondary for late-game content. To better understand these enemies and how they work, check our Once Human aberrants guide.
SMGs and pistols: speed and pressure
SMGs offer high fire-rate mobility for aggressive rushes. Pistols are powerful secondaries with fast swap speed, often used to bridge reload windows on your primary weapon. Both reward an active, forward-moving playstyle.
Heavy weapons: specialists only
Rocket launchers and miniguns demolish vehicles, fortifications, and raid bosses. They are movement-heavy and ammo-hungry. Bring them with purpose, not as a default; they reward planning, not habit.
Best Once Human guns for early game: top picks to progress fast without wasting resources
In this Once Human weapons guide, choosing the right early game weapons will help you progress faster without wasting resources.
Once Human weapons tier list showing the strongest guns in the current meta.
The first ten hours are all about momentum. These weapons punch above their tier and carry you comfortably into mid-game without requiring rare crafting materials.
1. Decimator-9 (assault rifle): the best all-around gun in Once Human
Decimator-9 assault rifle customization screen in Once Human.
The Decimator-9 is the single most versatile weapon in Once Human. It drops from Military Outpost caches and offers solid DPS at medium range with minimal mod requirements. Its 30-round magazine and moderate recoil make it forgiving for new players while scaling well with attachments. Prioritize the Barrel Stabilizer mod first; it cuts horizontal recoil by 22% and dramatically improves accuracy while moving.
2. Arc blaster (Energy Pistol): the underrated early game pick
Obtainable within the first two hours, the Arc Blaster deals energy damage that bypasses early Deviated armor entirely. Most players overlook it, but it serves as a consistent secondary through most of the story campaign. Farm the Echoing Cavern near the starting zone. Arc Blasters appear as guaranteed loot in the eastern storage room.
3. Ironclaw SMG: perfect for fast and mobile playstyles
Perfect for players who prefer speed over stability. Its high fire rate creates pressure in closed spaces, and its compact size allows for faster aim-down-sights speed. Pair it with a dodge-heavy build for maximum survivability and constant forward pressure.
Once Human weapon crafting guide: how to build and farm the best weapons efficiently
Stats: Crafting is Once Human’s deepest progression system. Looted weapons cap at their base stats; crafted weapons can be pushed to their theoretical maximum with the right blueprint and materials. This Once Human weapons guide also explains how crafting impacts your weapon strength and progression.
Crafting becomes much easier once you understand the core progression systems.
Step 1: Build and upgrade your crafting station
Start with the Basic Workbench at your base, which requires 50 Iron Scraps and 20 Wood Planks. Upgrade to the Advanced Workbench to access Tier 3+ blueprints. The Calibration Station, unlocked at Base Level 5, is required for Elite-tier weapons and should be your first major base investment.
Step 2: Acquire the right blueprints for each tier
Basic blueprints come from world chests and common enemy drops. Advanced blueprints are rewards for completing Strongholds and Weekly Challenge caches. Elite blueprints are exclusive to Named Boss drops and Season Pass rewards; you cannot buy or trade for them.
Step 3: Farm materials in the right zones
Tier 1 weapons need Iron Scraps and Polymer Resin from Abandoned Factories. Tier 2 requires Alloy Plates and Circuit Boards from Military Outposts. Tier 3 demands Nano Fibers and Energy Cores from Strongholds. Tier 4 elite weapons need Void Crystals and Titanium Alloy, both locked behind endgame raids. Run Military Outposts in a group of three; the loot table nearly triples with party scaling, and you can clear Tier 2 materials in under 15 minutes per run.
To optimize your base for weapon crafting, read our Once Human base building guide.
How to upgrade Once Human weapons: max your DPS through mods, calibration and starchrom
Upgrading in Once Human works across three independent layers. Mastering all three unlocks a weapon’s true potential; most players only ever use one or two. In this Once Human weapons guide, upgrading your weapons correctly is key to maximizing your damage output.
Layer 1: mods and attachments: your first upgrade priority
Every weapon has between three and six mod slots depending on rarity. For aggressive builds, prioritize magazine capacity, then reload speed, then grip stabilizer. For precision builds, focus on Scope Zoom, Barrel Stabilizer, and Stock Weight. For mobility builds, target grip speed, reduced ADS time, and a lightweight stock.
Layer 2: calibration: permanent stat bonuses worth the investment
Done at the Calibration Station, calibration adds permanent bonuses, including critical rate, bonus damage against specific enemy types, and elemental affinity. Each attempt costs materials and carries a success rate. Failed attempts don’t downgrade the weapon, but materials are lost; only calibrate when you have surplus stock or are finalizing a build.
Layer 3: Starchrom Enhancement: Endgame Weapon Optimization
Starchrom pushes weapons beyond the standard upgrade cap. It is optional for most content but mandatory for top-tier raid performance. Always spend Starchrom on your main weapon first. Spreading it thin across your whole loadout is the most common mistake players make at the endgame stage.
Once Human combat guide: 7 proven strategies to win every fight and survive the wasteland
Knowing your weapons is only half the equation. These fundamentals consistently separate survivors from victims in Once Human.
1. Pre-Aim before every engagement to activate the precision stance bonus
Crouching before engaging enemies with ranged weapons activates a hidden 15% accuracy bonus, the Precision Stance, that most players never trigger. Make it a habit before every single fight, and you will notice an immediate difference in your shots connecting at range.
2. Target weak points for 2.5× damage on every enemy type
Every enemy has at least one weak point, highlighted in orange when scoped. Headshots deal 2.5 times base damage on human enemies. On Deviated enemies, the weak point shifts between phases; always scope in first to identify it before committing to a firing pattern.
3. Rotate Weapons Based on Distance or Lose the Damage Advantage
Running a two-weapon loadout that covers different ranges is not just good practice; it is necessary for survival. The game penalizes using a shotgun at 40 meters just as harshly as using a sniper at five. Keep your loadout flexible and switch actively during engagements.
4. Use elevated positions to exploit enemy aI limitations
Once Human’s AI has dynamic pathing but limited vertical awareness. Rooftops, shipping containers, and cliff edges dramatically reduce your exposure while maintaining clear sightlines. Always look up when entering a new area; the best position is almost never at ground level.
5. Treat ammo conservation as a core combat skill
Running dry inside a Stronghold is often fatal. Monitor your ammo counter after every engagement, never pass a crafting station without restocking, and craft Stack Ammo Pouches early; they increase your max carry capacity by 40% per ammo type and are the best value-per-material-cost items in the early game.
6. Cycle Boss Staggers to Open a 50% Damage Window Every Fight
Bosses have a hidden Stagger Bar that depletes with rapid sustained fire. Once staggered, the boss enters a four-second window where all incoming damage increases by 50%, and they cannot attack. Build your party around stagger cycling: one player maintains fire while others reload and prepare to rotate in.
7. In PvP, tap-fire discipline beats raw DPS every time
Most players sprint in straight lines. Burst-fire weapons like the Decimator-9 punish this reliably. Avoid full-auto spray in PvP at any range beyond 20 meters; tap-fire discipline wins more gunfights than raw DPS, and it costs you nothing to learn.
Once Human rewards players who invest time in understanding their arsenal. The Decimator-9 remains the best all-around gun for most of the game, energy weapons are criminally underused against Deviants, and calibration is the most overlooked upgrade layer for late-game optimization. Follow the strategies in this guide and farm the right materials for your tier, and you will consistently outperform players with better gear through pure knowledge and technique
This Once Human weapons guide gives you everything you need to master weapons, builds, and combat strategies efficiently.
Mastering weapons is only one part of survival. To dominate Once Human, you need to combine the right builds, base setup, and progression strategy.