Undead Survival

Endless waves of zombies.

**Undead Survival** is a popular survival game mode with endless waves of zombies.

## Enemies

Undead Survival only features zombies and infestors as enemies. This means there are no airborne enemies, and as such SAM turrets and lock-on only launchers are completely useless.

## Strategy

Since the majority of enemies only have melee attacks, it's wise to get air support, especially in earlier waves.

Melee kills and headshots should be top priority, boosting money through both an initial bonus and by increasing the point multiplier.

Turrets are a good way to earn and maintain one's money multiplier as these will not cause a reset. The same applies for aircraft and the Deadswitch.

The Reaper is arguably the best aircraft to use in Undead Survival, as although it has the heavy price tag of $30,000, it can be easily earned and maintained with a full x5 multiplier, and its small size means it is relatively easy to dodge rockets and launching grenades, which Generic Zombies and Fat Zombies may carry in later waves.

In a pinch, the Upgraded MH-6 can fill a similar role.

## Waves

* 2 Fat Zombies appear in **Wave 3**. They have relatively high health and dish out more damage per hit than your average zombie, but can be easily defeated with a shotgun or a Remote Sentry.
* 8 Sprinter Zombies appear in **Wave 5**. They make up for their low health with their speed, though they can easily be defeated with aircraft or turrets.
* Exploder Zombies appear from **Wave 6** onwards. They will explode on death, or on contact with a survivor. The explosion will heavily damage survivors, so they should be priority targets.
* Mutated Sprinter Zombies from **Wave 7** onwards. They have extremely high health, deal more damage and move faster than their normal counterparts. They can easily close the gap between survivors and kill them in 2 hits.
* Spitter Zombies appear from **Wave 8** onwards. They fire venom at survivors, dealing significant damage. They also lack a head, so using turrets is crucial to maintain one's money multiplier. They also cannot perform melee attacks.
* Fat Zombies armed with Thumper grenade launchers appear from **Wave 9** onwards. One hit may be able to down a survivor and instantly end a solo run, so purchasing Juggernaut or Specialist is recommended. Aircraft are also vulnerable to Thumper grenades.
* 5 Infestors appear in **Wave 10**. Their "headshot" location is at their bottom, though explosives can also make short work of them.
* Generic Zombies armed with RPGs appear from **Wave 11** onwards. They are a priority target as their rockets can instantly down a survivor and destroy turrets and aircraft easily.
* Mutated Exploder Zombies appear in **Wave 12** onwards. Unlike their lesser counterpart, Mutated Exploders have a lot of yellow goo on their body, and when they explode, they can stun nearby survivors and zombies. If in an aircraft, survivors can use this to their advantage by exploding Mutated Exploders near Weapon Zombies, rendering them unable to attack.
* Mutated Spitters appear in **Wave 16** onwards. Unlike their lesser counterpart, Boss Spitters **do** have a head, albeit heavily deformed, but they can fire a continuous burst of venom, which can be very dangerous to aircraft.
* Shield Zombies appear in **Wave 16** onwards. Similar to their human counterpart in Terrorist Survival, Shield Zombies have a unique helmet and are armed with a Riot Shield, making them and any enemies behind them impervious to bullets. Explosive weapons are very effective at killing them.
* King Infestors appear in **Wave 20** onwards. They are much larger than a typical Infestor, but they can kill non-Juggernaut survivors in one hit. They also move slower. Using aircraft is a good way to defeat King Infestors, as they can only perform melee attacks.
* **Wave 20+** will eventually have the spawn limit reach a hard cap of 100 enemies. King Infestors are very common, and it is usually nigh-impossible to survive past Wave 20. Weapon Zombies are also just as common

**Notes**

* If you have a weapon with the single fire attachment available, and switch to a melee weapon like the sledge, you can attach single fire to said melee weapon, drastically increasing range and fire rate.