Codes give stats reset, spins and weapon color spins as of now. To enter a code, go to the Ticket icon, you can then type codes exactly how they are listed and press Submit. To use Weapon Spins, go to Dr. Stein, located at Spawn.
Spins can be used both to change your weapon and your family (as a meister) and are shared through both saves as meister and weapon.
Current working codes are
tygooglencelina -
ironfist - 10 spins
speedyninja - 10 spins
frogwitch - 35 Spins
thankyoupartone - 50 Spins
thankyouparttwo - 50 Color spins
resetmystats - stat resets
thisresetsyourstats - stats reset
Expired Codes:
dragonrider : Gave some free spins
vampirebite : Gave free spins
samuraicode : Gave some free spins
spoqn : Gave some free spins
gleamsama : Gave some free spins
ourplehedgehog : Gave some free spins
browncat : Gave some free spins
greyfish : Gave some free spins
whatisitnow : Gave some free spins
unspeakablerizz : Gave some free spins
blackblood : Gave some free spins
celebrationtime: Gave some free spins
bigslamdunk: Gave some free spins
anewleaf: Gave Stat Reset