Enemy counter displayed on top left of screen
Timer displayed on top right of screen
Health bar displayed on bottom left of screen
Current zone displayed on bottom left of screen
Increased waypoint offset from top of screen
Changed player waypoint location to be center of player instead of top of player
Increased distance between revive waypoint arrow and icon
Bleedout bar displayed when downed
Revive bar displayed for downed player
Changed revive bar color to blue
Player needs to be revived text updates to new player instantly

Players

Unlimited sprint
Increased health from 100 to 150
Self revives in solo are active whenever the player has at least 1 perk
100% backwards move speed
Decreased sprint time needed to be able to dive from 0.25 seconds to 0.1 seconds
Can dive again right away after just diving
Increased melee range by 16% (same as Black Ops 1)
Disabled melee lunging
Decreased normal health regeneration delay from 2.4 seconds to 2 seconds
Decreased low health regeneration delay from 5 seconds to 4 seconds
Normal health regeneration rate is no longer instant
Changed health regeneration rate to 100 health per second (normally fully restored health in 0.5 seconds)
Fall damage no longer increases when max health is increased
Added blood fx when at or below 20% health
Removed blur when getting damaged
Removed shellshock when getting damaged from grenades
No longer killed when landing on top of another player
Ignored by enemies for 1 second after being revived
Weapon is no longer switched after reviving if player switched weapons during revive
No longer gain points back on self revives
Can shoot while looking at other players
Increased mantle speed
Increased ladder climb speed
Start with semtex on maps that have semtex
Entering and exiting last stand no longer refills last stand weapon clip automatically
Decreased friendly player name fade out time from 1.5 seconds to 0.25 seconds
Removed enemy player name fade in time

Zombies

Health capped at 100,000
Attracted towards points of interest immediately
Removed walkers in high rounds
Removed headless zombies
Neck counts as headshot

Denizens

Decreased maximum amount that can be spawned at once from 2 to 1
Decreased minimum number of melees to kill from 5 to 3
Decreased minimum number of melees to kill with Bowie Knife from 3 to 2
Decreased minimum number of melees to kill with Galvaknuckles from 2 to 1
No longer automatically runs away when player is first attacked in solo
Removed hint when player is first attacked in solo

Brutus

No longer receives additional damage from Ray Gun Mark 2

Weapons

Switch to melee weapon by pressing the new melee weapon button (same button as the Time Bomb and Maxis Drone)
Changed grenade damage scalar to 25 multiplied by round number (normally random number between 100 and 200 added by round number)
Capped grenade damage scalar at 1500
Changed projectile weapon damage scalar to 50 multiplied by round number (normally random number between 0 and 100 multiplied by round number)
Capped projectile weapon damage scalar at 3000
Changed placeable mine damage scalar to 150 multiplied by round number (normally random number between 100 and 200 multiplied by round number)
Capped placeable mine damage scalar at 9000
Disabled sniper scope sway

AN-94

Increased weapon cost from 1200 to 1500

B23R

Changed weapon cost to 900 on all maps

Ballistic Knife

Projectiles are no longer picked up by other players
Projectiles can be picked up while the weapon is not reloaded
Projectiles can be picked up while the player is not on the ground

Executioner

Increased penetration

HAMR

Decreased recoil

M1216

Increased penetration

M1911

Upgraded: given as last stand pistol above all others except Ray Gun Mark 2

M1927

Decreased ammo cost from 800 to 750

M8A1

Decreased recoil

MTAR

Decreased recoil

Remington 870

Changed weapon cost to 1200 on all maps
Increased penetration

RPD

Decreased recoil

S12

Increased penetration

SMR

Increased damage by 100%
Removed ADS spread

Type 25

Decreased recoil

War Machine

Unupgraded: grenades explode on impact

EMP Grenade

No longer disables HUD
Disables player's perks for 30 seconds
Added fx to EMP'd players
Decreased zombie EMP radius by 30% (same radius as perk EMP)
Sprinting no longer wakes up EMP'd zombies

Claymore

Can be repurchased
Increased max amount that can be placed from 12 to 20

Ray Gun

Unupgraded: increased impact damage from 1000 to 1500 (same as max splash damage)
Upgraded: increased impact damage from 1000 to 2000 (same as max splash damage)
No longer limited to 4 players

Ray Gun Mark 2

Same probability to obtain as other weapons
Can be obtained if player has Ray Gun
Limited to 1 player on all maps

Jet Gun

Kills multiple enemies significantly faster
Kills enemies that are in the ground, traversing, or behind barriers
Awards points for kills
Cools down twice as fast
Cools down while not holding weapon
Heats up when firing while meleeing
No longer kills when not firing
No longer automatically switched to weapon when picked up
No longer disassembles when overheated
Weapon is taken when overheated

Sliquifier

Added upgraded version
Kills on any round (normally stops killing after round 100)
Removed additional goo created by chain kills

Blundergat

Kills on any round

Acid Gat

Kills on any round

Wallbuys

Increased trigger radius
Decreased upgraded ammo cost from 4500 to 2500
Lethal grenade hint string no longer displays "ammo" after purchasing

Mystery Box

Decreased weapon pickup time from 12 seconds to 9 seconds
Moves to new location instantly
Special sound no longer plays when obtaining the Ray Gun
Special sound plays when obtaining a limited weapon

Perks

Removed perk limit
No longer deactivated if the perk machine is powered off
Added high qualty perk icons to all maps

Juggernog

Increases current health by 100 upon purchase (normally sets current health to max)

Quick Revive

No longer automatically powered on in solo
Increased cost in solo from 500 to 1500
Decreases health regeneration delay by 25%

Speed Cola

Aim twice as fast
Switch weapons twice as fast
Throw grenades twice as fast

Double Tap

Removed shooting 2 bullets for every shot
Increases bullet damage by 50%

Stamin-Up

Move faster (normally only sprint faster)

Deadshot Daiquiri

Increases bullet headshot damage by 100%
Move faster while aiming
Decreases sprint recovery time

Mule Kick

Added additional weapon indicator
Additional weapon is given back when perk is reacquired
Stowed weapons refill ammo from stock over time

Tombstone Soda

Added in solo
Added powerup waypoint
Powerup no longer removed when revived
Powerup removed when downed
Unlimited time to pick up powerup
Changed powerup fx color to blue
Powerup gets destroyed by EMP Grenades
Restores all weapons properly
Disabled suicide option when player is down
Flipped perk icon

Who's Who

Gain all other perks the player had before going down when entering Who's Who mode
Revive twice as fast when in Who's Who mode
No longer gives the player claymores when entering Who's Who mode if the player purchased claymores

Electric Cherry

Removed cooldown after being used multiple times in a row

Vulture-Aid

Stink areas no longer activate while the player is moving

Pack-a-Punch

Decreased weapon pickup time from 15 seconds to 12 seconds

Powerups

Insta Kill

Grabbing while already active adds 30 seconds to timer instead of resetting timer to 30 seconds

Double Points

Grabbing while already active adds 30 seconds to timer instead of resetting timer to 30 seconds

Nuke

Kills all zombies instantly

Carpenter

Removed

Meat

Able to drop when players are down
Changed powerup fx color to blue
Decreased time on ground from 16 seconds to 10 seconds
Message shows when the meat is on a player
Meleeing while the meat is moving no longer grabs the meat
Meleeing while the meat is moving throws the meat
Meleeing while the meat is moving activates more consistently

Persistent Upgrades

Removed

Buildables

Added purchase cost
Parts automatically picked up
Zombies no longer attack (except Zombie Shield)
Destroyed by taking 1500 damage
No longer destroyed by 2 grenades

Electric Trap

No longer needs to be powered by a Turbine
Gets destroyed after being deployed for 30 seconds
Kills on any round (normally stops killing after round 50)
Can kill unlimited zombies at once
No longer kills players without Juggernog instantly
Decreased player damage from 75 to 25
Decreased player shellshock time from 2.5 seconds to 1.25 seconds
Decreased startup time from 2 seconds to 0.5 seconds

Turret

No longer needs to be powered by a Turbine
Gets destroyed after being deployed for 30 seconds
Kills on any round in 1-4 shots (normally does 1200 damage max)
No longer damages players
Fire type changed from burst fire to continuous fire
Fixed a bug where the Turret sounds would continue playing after being picked up

Subsurface Resonator

No longer needs to be powered by a Turbine
No longer gets destroyed from kills
Gets destroyed after being deployed for 30 seconds
Fires every 2 seconds (normally has a longer delay depending on the amount of kills from the previous fire)

Maxis Drone

Switches back to correct weapon after deploying

Bank

Deposited points resets each game
Gain 10% interest on deposited points at the end of each round
No longer costs 100 points to withdraw
Players can deposit and withdraw less than 1000 points
Account balance is shown when depositing, withdrawing, and going near the triggers
Disabled trading points

Weapon Locker

Stored weapon resets each game
Stored weapon gains max ammo at the end of each round

Maps

Tranzit

Any door that requires a Turbine to open is automatically open whenever the power is on
Lava in starting area activates after the power is on
Lava destroys grenades instantly
Decreased brightness at Power Station
Power switch automatically crafted
Pack-a-Punch automatically crafted
Navcard table automatically crafted
Grief: added Ballistic Knife, Ray Gun, and Ray Gun Mark 2 to the Mystery Box
Fixed a zombie riser spawn point at Outside Power Station being too high above ground
Fixed a zombie pathing exploit at Town in Bookstore

Bus Depot

Lava in starting area activates immediately
Power doors open when door is opened
Lava pit is accessible

Diner

Added Survival and Grief gamemodes
Wallbuys: M14, Olympia, MP5, Galvaknuckles
Perks: Juggernog, Quick Revive, Speed Cola, Double Tap

Farm

Zombies spawn in the Farm zone when in the Barn zone
Added Claymore wallbuy
Survival: removed Galvaknuckles wallbuy
Grief: removed player spawns near gate

Power Station

Added Survival and Grief gamemodes
Wallbuys: M14, Olympia, AK74u, MP5, Bowie Knife
Perks: Juggernog, Quick Revive, Speed Cola, Double Tap, Tombstone Soda
Pack-a-Punch

Town

Moved Quick Revive to Stamin-Up's location on Town
Moved Stamin-Up to its location on Tranzit
Moved Tombstone Soda to the laundry room front door
Grief: added Tombstone Soda

Die Rise

Zombies no longer spawn in the Upper Blue Highrise zone when in the Trample Steam zone
Zombies no longer spawn in the zone next to the AN94 when in the AN94 zone while the debris is closed
Navcard table automatically crafted

Mob of the Dead

1 afterlife max in solo
Acid Trap kills on any round (normally stops killing after round 158 on PC)
Tower Trap kills on any round in 1 shot
Upgraded Tower Trap kills on any round in 1-2 shots
Upgraded Tower Trap stays upgraded until the end of the round
Plane parts are shared in coop
Plane parts must be all acquired to craft
Plane fuel automatically picked up
Players no longer respawn in the Acid Trap

Cell Block

Added Smoke Grenades to the Mystery Box

Buried

Power automatically on
Removed Turbine
Removed Sloth barricades
Sloth can no longer be unlocked
Ghosts no longer spawn a free perk powerup if any player gets damaged by the ghosts
Fountain portal automatically active
Navcard table automatically crafted
Players can no longer get into the corner next to Juggernog
Fixed hint strings on buildables when purchased

Borough

Tunnels disabled
Players spawn at Stables
Mystery Box initially spawns at a random location
Added B23R, M16, Claymore, and Bowie Knife wallbuys at their locations on Buried
Added PDW wallbuy at Morgue
Added SVU wallbuy at Church
Moved Quick Revive to Speed Cola's location on Borough
Moved Speed Cola to its location on Buried
Moved Stamin-Up to Vulture Aid's location on Buried

Origins

Door prices in solo cost the same as in coop
Shovels automatically picked up
Gramophone and records automatically picked up
Der Wunderfizz: increased cost from 1500 to 2500
Der Wunderfizz: all perks have an equal chance of being obtained
Rituals of the Ancients: spend points challenge reward changed from Double Tap perk to a random perk that the player does not have (perk does not change if reward is reopened)
Soul boxes: decreased kill requirement from 30 to 20
Perk bottle dig spots: give random perk
Perk bottle dig spots: visible and diggable without Zombie Blood
Perk bottle dig spots: increased number of rounds for next dig spot to spawn from 1 to 4

Gamemodes

Grief

Win rounds by getting all enemy players down
First team to win 3 rounds wins the game
Tie round if both teams die within 5 seconds of eachother
Sudden death after 5 minute round (all players lose 100 health)
Unlimited zombies
2500 health zombies
0.5 second zombie spawn rate
Only sprinting zombies
Zombies start spawning 10 seconds after the round starts
Players start each round with at least 10000 points
2 lethal grenades and mines awarded each round
Unlimited powerups
Unlimited barrier rebuild points
Decreased stun time of unupgraded weapons from 0.75 seconds to 0.5 seconds
Decreased stun time of upgraded weapons rom 0.75 seconds to 0.625 seconds
Meleeing enemy players pushes 16.67% farther for every 500 damage that melee weapon deals
Meleeing enemy players that are crouched pushes 33.33% of the amount when standing
Meleeing enemy players that are prone pushes 16.67% of the amount when standing
Meleeing enemy players that are already stunned will push them
Ballistic knife projectile pushes enemy players
Claymores are no longer triggered by enemy players
Stun fx is linked to the player
Stun fx shows in the correct position for projectiles
Stunning enemy players steals 100 points from them
Downing enemy players awards 500 points
Bleeding out enemy players awards 1000 points to all teammates
Landing on top of an enemy player downs only the bottom player
Landing on top of an enemy player can be done at any stance
Increased max radius for landing on top of an enemy player by 16.67%
Decreased max height for landing on top of an enemy player that is crouched by 13%
Decreased max height for landing on top of an enemy player that is prone by 47%
Max Ammo: unloads clip of all enemy players' weapons
Double Points: enemy players gain half points for 30 seconds
Insta Kill: enemy players deal half damage for 30 seconds
Nuke: deals 80 damage to all alive enemy players and makes all downed enemy players bleed out
Added kill feed (includes downs, revives, and bleed outs)
Added player kills on scoreboard
Added player downed and bled out icons on scoreboard
Added intro text
Announcer audio always plays
Last player alive audio only plays for the player who is alive instead of every player on the team
Enemies remaining audio and text displays when enemy players down instead of when enemy players bleed out
Enemies remaining text is removed when new text is displayed
Added new audio when enemy players bleed out
Players do not get their weapons back on round reset if they bled out
Round reset properly restores dual wield weapon left clip ammo, alternative weapon ammo, and equipment
Spawn points are assigned to a team
Teams switch spawn points each round
Players respawn at initial spawn points
Decreased connection timeout from 90 seconds to 45 seconds
Random map rotation
25000 health Brutus

Containment

Gain score by being the team with the most players alive in the containment zone
First team to gain 250 score wins the game
Contested if both teams have the same amount of players alive in the containment zone
Both teams gain score at half-rate when contested
Zombies only go after players in the containment zone
Players gain points for being in the containment zone
Players respawn after being down for 10 seconds
Players retain perks