At the 'Secrets' option when the game has been paused enter the following codes (some of which become available only at certain levels) to activate the following
Introduction sequence:
Password - Hi
Level Select:
SpringBreak
Easier game:
BoaPlace
Shoot beams temporarily:
GazerBeam
Faster game:
SassMode
Temporary unlimited Incredi-power while playing as Violet:
TonyLoaf
Slow motion player:
BWTheMovie
Horizontal camera control switched:
InvertCameraX
Vertical camera control switched:
InvertCameraY
Toggle HUD:
bHUD
Reverse movement with Nomansian Island turret:
InvertTurret
Some objects flash different colors:
DiscoRules
Brightness/bright colors:
EMode
Temporary unlimited Incredi-points:
PShowtime
Superspeed Incredi-power while running:
DanielTheFlash
Temporary unlimited Incredi-power while playing as Dash:
DashLikes
Destroy all nearby enemies and items:
SmartBomb
Refill 25% health:
UUDDLRLRBAS
Health remains constant:
PinkSlip
Fast Running and Ramming Incredi-power:
McTravis
Findtrails And Superpunch:
Kronos
Fire Trail:
AthletesFoot
Unlimited Elastigirl powers:
Flexible
Dash not hurt when running into objects:
Gilgendash
Credits sequence:
YourNameInLights
Henchmen always launch death shrapnel:
Dandruff
Battle mode:
RotAIDalg
Deactivate all active codes:
TheDudeAbides
Big head mode:
Einsteinium
Small head mode:
DeEvolve