Use the following level passwords according to the desired difficulty mode:
Level1: Normal: XHGDR; Hard: PLKUM; Very Hard: PVTSL
Level2: Normal: WKUC4; Hard: JE5SH; Very Hard: SKDJF
Level3: Normal: YSM51; Hard: DFY3B; Very Hard: 3DYNG
Level4: Normal: B7D8F; Hard: K9D3H; Very Hard: 9BG3S
Level5: Normal: 3GHSL; Hard: NMWQ9; Very Hard: KJWJK
Level6: Normal: AZLM1; Hard: 16G3L; Very Hard: E2J7H
Level7: Normal: JAHSG; Hard: WL3CZ; Very Hard: ZX78Y
Level8: Normal: UN63A; Hard: LPQ6T; Very Hard: TRIB4
Level9: Normal: VAZ2P; Hard: SRCM8; Very Hard: TRD78
Level10: Normal: 9TT5W; Hard: PAEN8; Very Hard: 1LPQD