| 🧟 Standard Infected | Day 1+ | Low | Baseball Bat Bait & Punish. Melee only in early game. |
| 🕷️ Crawler | Day 1+ | Low | Aim downward. Stomp animation or quick jabs. |
| 💚 Naked Green Zombie | Early | Medium | 2-3 Bat hits or 1 Pistol shot. |
| 🛡️ Riot Zombie | Mid-game | Very High | Flank from behind or the side. Shotgun blast to the back instantly kills. |
| 💣 Explosive Zombie | Mid-game | Medium | Kill from maximum range. Never stand in a group when these are nearby. |
| 👻 Ghost Zombie | Night 10+ | Medium | Let turrets auto-detect. Do not chase Ghost Zombies into dark areas. |
| 🎖️ Military Zombie | Night 25+ | High | Use walls for cover. Do not stand in open ground. Sniper rifle returns fire safely. |
| 🟣 Purple (Elite) Zombie | Late-game | Very High | Rocket Turret + AK-47/LMG. Prioritize these over standard zombies. |
| ☢️ Radioactive Zombie | Broadcast Tower zone | High | Kill before entering broadcast tower area. Farm multiple masks as backup. |
| 🌙 Night Hunter | Night 15+ / Suburbs | High | Raise funnel walls to 4 blocks. Shocky Turrets stun mid-leap. |
| ⚡ Electrified Zombie | Night 20+ | Medium | Kill at range. Shield Generator absorbs pulse damage to buildings. |
| 🔥 Elemental Zombie | Night 25+ | High | Fire: kill quickly before spread. Ice: carry speed perks or Flamethrower. |
| ☣️ Blighted Spitter | Hard Mode / Reactor | Medium | Prioritize over standard zombies. Move perpendicular to spit arc. |
| 🦠 Infested Variants | Hard Mode | High | Destroy infection nodes first. Flamethrower and Grenade Launcher for groups. |
| 📯 Screamer Variant | Mid-game+ | Low | Kill first with suppressed weapon or sniper. Assassin excels here. |
| 💪 Muscle Variant | Mid-game+ | Very High | Bear Traps and Barbed Wire before they reach walls. Double-layer fences. |
| 🧪 Hazmat Variant | Industrial+ | High | Do not use Flamethrower. AK-47 or turrets from range. |
| 👾 Mutated Boss | Blood Moon / Wave 50+ | Extreme | Rocket Turrets + Shield Generator. All players focus fire immediately on sight. |
| 🏴 Harbinger (Historical) | Removed event boss | Extreme | Historical note — if reintroduced, focus fire with Rocket Turrets and Commander airstrike. |