Incredible Shrinking Minion
Enter: B, UP, DOWN, DOWN, Y. Or you can unlock all world bonus levels to get it.
Unlock Despicable Gru Level
Enter: B, A, DOWN, DOWN, Y. Or, collect all the GRU Challenge Tokens.
Unlock Girls Room Bonus Level
Enter: B, L, A, B, B, Y. Or, you can collect all of Agnes' Unicorns in the current wheel.
Unlock Minion Mania Level
Enter: L, A, B, B, Y, UP. Or earn highest achievement of "Minion of the Month" in all levels.
Unlock The Bonus Minion Mania Level
Enter the code: L, A, B, B, Y, DOWN.
The Girls Room Level
Select-button on mode and enter B-L-A-B-B-Y thats' it.