1935 Tomb level reward - Successfully complete the 1935 Tomb level in story mode on the easy difficulty setting to unlock Cultist as a playable character in arcade mode.

1970 Chinese level reward - Successfully complete the 1970 Chinese level in story mode on the easy difficulty setting to unlock Chinese Chef as a playable character in arcade mode.

2005 Cyberden level reward - Successfully complete the 2005 Cyberden level in story mode on the easy difficulty setting to unlock the 1950 Village, 1985 Chemical Plant, and 2020 Planet X levels in story mode; Dr Seth Graven.Dr Kate Nadir, Fingers McKenzie, Ravelle Velvet, Sebastian Photon, Angel Perez, and Badass Cyborg as playable characters in arcade mode; and Badass Cyborg, Siamese Cyborg, and Female Cyborg as Bots in arcade mode.

1950 Village level reward -Successfully complete the 1950 Village level in story mode on the easy difficulty setting to unlock the 1950 Village level in arcade mode; and "Period Horror" as a Bot Set in arcade mode.

1985 Chemical Plant level reward -Successfully complete the 1985 Chemical Plant level in story mode on the easy difficulty setting to unlock the 1985 Chemical Plant level in arcade mode; "Usual Suspects" as a Bot Set in arcade mode; and Lumberjack, Malehood, and Waiter as Bots in arcade mode.

2020 Planet X level reward - Successfully complete the 2020 Planet X level in story mode on the easy difficulty setting to unlock the 1965 Mansion, 2000 Docks, and 2035 Spaceways levels in story mode; 2020 Planet X level in arcade mode; Peekabo Jones, Mary-Beth Casey, Jacques Misere, Olga Strom, R108, and Gretel as playable characters in arcade mode; "Space Opera" as a Bot Set in arcade mode; and Tuxedo Cyborg, Red Alien, and Green Alien as Bots in arcade mode.

1965 Mansion level reward -Successfully complete the 1965 Mansion level in story mode on the easy difficulty setting to unlock the 1965 Mansion level in arcade mode; "Horror Shocker" as a Bot Set in arcade mode; and Fishwife Mutant, Hick Hyde, Insect Mutant, Overall Mutant, Police Zombie, Girl Zombie, Skull Zombie, and Jacket Zombie as Bots in arcade mode. Note: Set "Auto Aim" to toggle, leave it on, and crouch to get easier head shots to complete this level easier.

2000 Docks level reward -Successfully complete the 2000 Docks level in story mode on the easy difficulty setting to unlock the 2000 Docks level in arcade mode; "Law and Order" as a Bot Set in arcade mode; and Male Soldier, Female Soldier, Gasmask Soldier, Male SWAT, Female SWAT, and Gasmask SWAT as Bots in arcade mode. Note: There are a lot of snipers in high perches by the waterfront, so be alert in this level.

2035 Spaceways level reward -Successfully complete the 2035 Spaceways level in story mode on the easy difficulty setting to unlock the 2035 Spaceways level in arcade mode. Challenge mode Successfully complete story mode to unlock challenge mode, which allows you to compete in different challenging situations.