YAZS Weapon Upgrades and Branch Choices
A weapon's tier is a step in its upgrade path, not a power rating. For SWAT, advance Pistol to SMG, then choose Assault Rifle, Sniper Rifle, or Grenade Launcher. The final branches are alternatives: taking Assault Rifle does not lead to Grenade Launcher later. Use the gate checklist below before spending rerolls on a branch that cannot appear.

Weapon Facts for Version 1.0
System facts come from the official game and 1.0 release notes. Weapon paths and role descriptions are organized from current community weapon coverage.
Why an Unlocked Weapon Is Not Appearing
- Check Upgrades → the Survivor's name for permanent weapon access.
- In the run, develop the current weapon to rank 4 before expecting its next tier.
- Choose the tier-2 replacement, then develop it to rank 4 for the final choices.
- If a tier-3 weapon is already selected, another tier-3 weapon on that same Survivor's line is no longer an option for that run.
This sequence is explained in the developer's “Unlocked weapons are not available” troubleshooting section, with independent player confirmation in this weapon-upgrade discussion. The official examples predate 1.0; current community references retain the same SWAT sequence.
SWAT: Choose the Final Branch Before You Commit
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| Choice after SMG | What changes | When to consider it |
|---|---|---|
| Assault Rifle | Automatic Kinetic fire. | You want repeated firearm hits as the squad's direct-damage layer. |
| Sniper Rifle | Piercing shots with a longer-range role. | You can keep distance and want shots to reach through a line of enemies. |
| Grenade Launcher | Explosive rather than Kinetic damage. | Your current upgrades or objective favor Explosive damage. It replaces the rifle choice, not a separate ability slot. |
The developer confirms these three exclusive branches. The range and damage roles are described in Grandwiki's weapon records. The choices above compare behavior and damage tags; they do not rank DPS or promise a faster clear.
Example decision: for a Kinetic-damage achievement, keep a Kinetic branch in the plan. Choosing Grenade Launcher because it is also tier 3 would change the damage type you are trying to accumulate.
Pyro: Choose One Final Weapon After Blowtorch
Flamethrower, Infernax and Axerangs are alternative final choices. Axerangs is not a later upgrade from Flamethrower or Infernax. Pyro follows Fireaxe → Blowtorch → one of those three branches. The Pyro upgrade discussion (external) describes the same sequence retained in the community weapon records linked above; the developer's upgrade rules explain why a second final weapon stops appearing.
- Before the run, check permanent access to the final weapon you want in Pyro's upgrade tree.
- During the run, reach rank 4 on Fireaxe, take Blowtorch, then reach rank 4 on Blowtorch before looking for the final branch.
- If you want Axerangs, leave Flamethrower and Infernax unselected. Once either is taken, further rerolls will not turn it into Axerangs.
The tree's screen position does not make one final branch a higher weapon tier than the others. For Pyro's objective that forbids tier-3 weapons, choosing any of these three conflicts with that restriction; use the mission correction notes to distinguish the objective from the older Ghost classification bug. This resolves the upgrade choice, but does not establish a highest-DPS Pyro weapon.
Weapon-Line Examples for the Nine Survivors
This is a selection of community-described branches for finding a role, not a complete weapon database. SWAT's three final choices are confirmed above. Other rows may omit branches; exact permanent gates are not established here.
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| Survivor | Weapon path | Role and range | Best comparison |
|---|---|---|---|
| SWAT | Pistol → SMG → Assault Rifle / Sniper Rifle / Grenade Launcher | Rifle branches provide Kinetic fire; Grenade Launcher changes to Explosive damage. | Assault Rifle is the broad carry candidate; Sniper Rifle shifts toward longer-range piercing. |
| Tank | Shotgun → Pump-Action Shotgun → Minigun / Rocket Launcher | Close-to-mid range pressure, heavy firepower, and explosive coverage. | Compare the selected weapon's damage tag with the mission or achievement you intend to complete. |
| Engineer | Taser → Tesla → Blaster / Laser | Electric damage, deployable control, shields, and ability-driven squads. | Tesla supports Electric plans; Laser is the more direct focused ranged branch. |
| Huntress | Bow → Multishot Bow → Explosive / Freezing Arrows | Ranged critical pressure, volleys, area damage, and Freeze control. | Explosive Arrows cover groups; Freezing Arrows trade some direct pressure for control. |
| Ghost | Katana → Katana Splash → Thousand Cuts / Windcutter | Close Slashing pressure with a choice between nearby defense and longer reach. | Thousand Cuts protects close space; Windcutter gives a more distant option. |
| Medic | Pistol → Syringe Gun → Antidote / Freezing Flasks | Chemical and Freeze weapon examples; healing and other support depend on the selected ability or upgrade. | Do not infer a healing effect from the Medic name; check the particular weapon or ability. |
| Pyro | Fireaxe → Blowtorch → Flamethrower / Infernax / Axerangs | Fire and Slashing damage, burning zones, explosions, and low-health scaling. | Choose the final branch before committing; none of the three upgrades into another final branch. |
| Mechanic | Trust Spanner → Lancer → Chainsaw / Nitro-Gun / Spanner Spammer | Mixed melee and ranged tools, Ice control, deployables, and ability support. | Choose the branch that complements the team's range rather than adding a second disconnected distance. |
| Ranger | Crossbow; Repeater Crossbow and Flarebolt are named in the official 1.0.1 notes | Marks, Kinetic critical support, animal companions, crowd control, and team utility. | The 1.0.1 notes say Repeater Crossbow and Flarebolt can fire bolts separately. A complete Ranger branch tree and its unlock gates are not established by this page. |
1.0 Weapon Changes to Remember
These official changes are why pre-1.0 weapon rankings need caution. The current 1.0.1 notes also correct weapon description tooltips.
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| Change | Official 1.0 note | Practical reading |
|---|---|---|
| Penetration | Most weapon attacks no longer lose damage on penetration. | Piercing branches may behave differently from older guides; compare the current card and range. |
| Critical rolls | Burst and multi-projectile attacks roll Critical chance once for the group or projectile set. | Do not use an old per-projectile critical calculation to predict current output. |
| Boss health | Boss enemy base HP increased by one quarter. | A weapon that was enough for an older Boss timing may need a stronger direct path now. |
| Tank | Sawblade Drone final damage changed from 200 to 150. | Do not treat old Sawblade Drone numbers as a current Boss guarantee. |
| Engineer | Early-rank Electrocution damage changed from 75 to 25; final damage unchanged. | Electric control can still be useful, but early-rank expectations need a current-client check. |
| Huntress | Tier 2 and Tier 3 weapon firing arc changed from 30 to 20. | Volley coverage and positioning should be judged from the current weapon behavior. |
| Ghost | Windcutter travel distance increased slightly; Kunai Dance and Shuriken final values changed. | Ghost branch comparisons from Early Access may not preserve their old ordering. |
| 1.0.1 tooltips | Weapon description tooltips were fixed when they showed damage values higher than the actual value. | Use the current tooltip and the official 1.0.1 update notes when an older comparison disagrees. |
Tank: Minigun or Rocket Launcher?
The developer’s range-system notes distinguish these options. The August 2026 community build guide retains the same Tank comparison for 1.0.
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| Weapon | Documented distance behavior | Decision |
|---|---|---|
| Tank shotguns | Strong at short to medium distance; damage falls at long range. | Do not judge their output only while retreating far away. |
| Tank Minigun | Damage decreases with distance. | Consider it when you can maintain closer engagements. |
| Tank Rocket Launcher | The developer describes it as viable at any range. | Consider it when movement forces frequent long-distance attacks. |
This compares distance sensitivity, not measured DPS. It does not establish that Rocket Launcher always outperforms Minigun, or that any range is safe against a particular Boss.
What the Comparison Covers
Use the official upgrade sequence to diagnose a missing offer, then compare the branch's damage tag and behavior against your goal. The nine-Survivor table is a community role overview. It is not a complete final-branch list or a measured tier ranking. Full Ranger gates remain a gap; do not spend rerolls based on an assumed branch order.
Continue With the Related Guides
A weapon choice becomes meaningful only after the roster, team roles, synergies, and mode are clear.
Verification notes
Official 1.0 combat changes are separated from community weapon examples and upgrade gates.
- Official 1.0 release notes: Full Release - Version 1.0 — penetration, critical grouping, Boss HP, and Survivor-specific balance changes.
- Official 1.0.1 update notes: Yet Another Content Update 1.0.1 — current weapon tooltip and item fixes.
- Official game site: Yet Another Zombie Survivors — squad structure, weapons, abilities, synergies, permanent progression, and range context.
- Community weapon role map: Yet Another Zombie Survivors Weapons and Abilities — nine weapon lines, ability names, range, control, healing, and role-level descriptions.
- Related team guide: YAZS Builds and Teams — specific team plans and their limitations.