Passed on a high level of difficulty
The first level is completed
Completed five levels
Using bonuses
The first stage is completed
Unlock the fifth level of the tower
Unlock the fourth level of the tower
Passed on a standart level of difficulty
Passed on a easy level of difficulty
The maximum bonus
Passed on a unreal level of difficulty
Unlock unreal level of difficult
The seventh level is passed
Complete the third stage of seventh level of complexity is UNREAL
Unlock the sixth level of the tower