Start game and select password in the menu. 
Enter one of the following passwords to start at the desired level. 

Level - Password
11 - KLTDAA 
21 - MOADVA 
31 - ZODDIA 
41 - SIGDNA 
51 - DGSDBA 
61 - TERDOA 
71 - NUDDBA 
81 - VIVDVA 
91 - BXNDXA