Nightmare Mode (SAS4)

Nightmare Mode in SAS4 costs one Nightmare ticket to play; tickets are replenished periodically. Zombies are much harder, and each map is individually redesigned. In addition, Nightmarish zombies exist, which are much larger than normal, and have five buffs, including "Nightmarish" - unlike any other case, a Nightmarish zombie can have both Fiery Skin and Poisoned Limbs. Multiple bosses spawn at times such as the Onslaught countdown end, the Vaccine train platform, etc. Even a group of players at intermediate levels may meet bosses such as "Nightmarish" Savage Devastators or a swarm of Nightmarish Regurgitators, which is similar to a Savage Regurgitator in terms of size and HP.

In addition, Nightmarish zombies with 5x health and 5x damage exist, which are much larger than normal, and have the following buffs (although not all are listed in game, they are noticed when you use a weapon on a nightmarish zombie):


 * Nightmarish
 * Fiery Skin
 * Poisoned Limbs
 * Chitinous Hide
 * Energy Resilient
 * Extra Fast
 * Berserk
 * Extra Strong

Nightmarish enemies, however, do not come with regenerating, dark minion, or acid blood. Nightmarish bosses can only come with dark minion, extra strong, beserk, and extra fast, like with regular bosses, but not have a 10x health boost like nightmarish zombies do. They also have a massive damage boost, with even a Savage Regurgitator being able to one hit stronger players.

Multiple bosses spawn at the following in each mission:


 * Onslaught: At 3:15 and 0:30 on the countdown
 * Vaccine: The train platform and regular boss area
 * Survivors: The Midway point heading north and regular boss area
 * Zombie Pods: The first purge nest, followed by the Minion Nests in the final area
 * VIP: In any cabinet you open first, second is after taking the VIP to the parking lot of helicopter
 * Power Out: After flipping the first switch and the final boss fight
 * Last Stand: During waves 4 and 8

Even a group of players at intermediate levels may meet bosses such as a Nightmarish Savage Devastators or a swarm of Nightmarish Regurgitators, which are similar to a regular Savage Regurgitator in terms of size but have the HP of normal elite regurgitators. Unfortunately, all it takes is just one level 100 player to give a high chance of a Savage Necrosis spawning.

Even a Nightmarish Bloater Worm is still no laughing matter. Worms and Puke worms with the extra fast buff can be the deadliest enemy due to the massive health boost of all nightmarish zombies (bosses excluded) and can take any team out with little effort and in no time.