Sound Test:
Go to the Title Screen, press and hold Select, then hit start.

Sunsoft Level Passwords:
TPCWFMP - 01
WSJCLDX - 02
PVNRCMV - 03
HZSQQNV - 04
KCGHCNC - 05

'Fun' Level Passwords:
MJDVLXT - 02
ZBHPRLQ - 03
GWSXMHK - 04
CKWDRKV - 06
HCBSMGV - 07
JBKZQGS - 08
MMDMKKX - 09
LXNLJCP - 11
MYPCTNP - 12
PCLSRCP - 13
KPMDGXZ - 14
HMHRSDR - 16
MFLFHSH - 17
QXPKCHB - 18
MWRTLNR - 19
KBXNLPB - 21
DVJJBGM - 22
LGSSCZL - 23
MVGDKVX - 24
SXRQMVR - 26
PMQJPMX - 27
DHBPTWQ - 28
BCXLWVV - 29
NCDKKWG - 05
SKFKNNB - 10
TLVKLSW - 15
GMXCWPS - 20
LSQHCQS - 25
FXWBBSL - 30

'Tricky' Level Passwords:
MGQZMGG - 01
LXSFDXB - 02
ZRVXBWQ - 03
NKVKRTB - 04
DJCQQZT - 06
JHSVCQL - 07
RCHFGNN - 08
BJWVRCQ - 09
MZDCDTC - 12
MZVQKXB - 13
ZZRHJPL - 14
JQXRNGJ - 16
KWVBVJP - 18
TTKLKZT - 19
ZNXBKMP - 21
QSLQWTJ - 22
BGFVMFR - 23
BDGQRNX - 26
XPPBQWL - 27
JHQSPRH - 28
GCLKJMQ - 29
GJWDHMG - 05
RFPZFBJ - 10
JFLKJPX - 15
NNFFQPV - 20
SBCMSJS - 25
SRWGXZM - 30

'Taxing' Level Passwords:
PQFPTBP - 01
CPZRSRV - 03
SMSWSPW - 04
MDGMJLV - 06
WZWSDMK - 07
HZBCFQM - 08
SPRPVHR - 09
WRFVJDL - 11
GGBCXXS - 12
TTXQXQL - 13
DCBBWNH - 14
PFVFXCR - 16
NKVCKDN - 17
QPDDJFB - 18
QBGBPSW - 19
JLHFSRF - 21
WCLJNNK - 22
LVFHHMM - 23
MHNNCPC - 24
BBTSGZC - 27
LXFLJPX - 28
QKZVKFT - 29
DXCQKRX - 05
BWCBKXJ - 10
WCBLDQX - 15
JLXJWNW - 20
RNMKXLP - 25
WFCSHNT - 30

'Mayhem' Level Passwords:
XNMTWVD - 01
KDTJQQR - 02
VNTGWRB - 03
SQDLCRR - 04
RQXNVNP - 06
CBWMMLG - 07
LCVDQWL - 08
KDHWTJL - 09
DXCDQWL - 11
GWJTPLW - 12
LNZNHWM - 13
MZXZKZC - 14
LGJCRKM - 16
SQXKBZN - 17
WXTBWCB - 18
NPKNRKV - 19
DZTHVNL - 21
RMDTBFQ - 22
FCSLSPK - 23
RNHQXVM - 24
LHLTDDV - 26
HCBBKHV - 27
MWLGVQJ - 28
GSPQCRQ - 29
JHQTCPD - 05
GVNKKJL - 10
RWLTTCQ - 15
PZQWRGP - 20
LTGNDXH - 25
ZTTGRFH - 30