- 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 and "Space Opera" as
a Bot Set in arcade mode.
- Challenge mode
Successfully complete story mode to unlock challenge mode, which
allows you to compete in different challenging situations.
- Challenge 3A Tin Man level reward
Successfully complete all challenges to unlock the Challenge 3B
Lobster Run level and Robofish as a Bot in arcade mode.
- Challenge 3B Lobster Run level reward
Successfully complete all challenges to unlock the Challenge 3C Bowl
Them Over level and the "All Enemies Are Robofish" cheat.
- Challenge 3C Bowl Them Over level reward
Successfully complete all challenges to unlock Robofish as a
playable character in arcade mode.
- Challenge 4A Shame if Something Got Broken level reward
Successfully complete all challenges to unlock the Challenge 4B
Don't Wait Around level.
- Challenge 4B Don't Wait Around level reward
Successfully complete all challenges to unlock the Challenge 4C
Brick Flung High level and the "Enemy Bricks" cheat.
- Challenge 4C Brick Flung High level reward
Successfully complete all challenges to unlock the brick as a weapon
in arcade mode.