Yet Another Zombie Survivors Upgrade Path & Synergy Builds
Your squad, synergies and permanent upgrades decide how deep a run goes. Pick a leader for their perk, rescue two synergizing survivors, and spend training points on the upgrades that compound fastest.

The Permanent Upgrade Order
| Upgrade | What It Does | When |
|---|---|---|
| Pick your leader for the perk | SWAT reload speed, Tank armor, Huntress crits, etc. shapes every run | Before the run starts |
| Rescue two survivors early | Max squad of 3 doubles your firepower and adds half-strength perks | First minutes of a run |
| Unlock leader rank 2 (5,000 kills) | Doubles the leader perk and unlocks their second weapon tier | Mid run - prioritize leader kills |
| Build around synergies | SWAT+Engineer, SWAT+Pyro combos trigger bonus effects | Once you know your squad |
| Spend training points on core upgrades | Good Workout, Bigger Bullets, Gotta Go Fast cover the basics | Between runs (permanent) |
| Unlock level 10-30 upgrades | Rock Hard, Power Metal, Trigger Happy Havoc add real power | After a few runs (account level 10/20/30) |
| Grab lockdown/reroll/banish charges | Control which upgrades and items appear - I'll Be Back, Ill Be The Roundabout, Moderator Role | Account level 20 |
Your Survivor Progression
| Order | Progression |
|---|---|
| 1 | Pick SWAT or Tank as your first leader - simple, forgiving perks |
| 2 | Survive 20 minutes in default mode to unlock Vile Wasteland and endless |
| 3 | Buy permanent upgrades: Good Workout and Bigger Bullets first |
| 4 | Unlock Huntress (survive 15 min in Isolated City) for the ice/explosive build |
| 5 | Rank up SWAT/Tank to unlock Assault Rifle, Minigun, Rocket Launcher |
| 6 | Unlock Medic (100 health pickups) and Pyro (1M elemental damage) |
| 7 | Push account level 20 for lockdown/reroll/banish charges |
| 8 | Clear Hardcore and Boss Rush modes, then prestige for account power |
The Synergy-First Strategy
Pick a leader whose perk matches your playstyle, then rescue survivors that trigger synergies - SWAT + Engineer for EMP grenades, SWAT + Pyro for fire trails. Focus your permanent upgrades on the basics first (Good Workout, Bigger Bullets, Gotta Go Fast), then unlock level 10-30 upgrades like Rock Hard and Trigger Happy Havoc. Lockdown, reroll and banish charges at account level 20 let you control the selection screen.