Various Hints

Beyond the Dark Portal Level Codes
Human Orc
1: LLRSJR SLYRFT
2: BTTLFR SKLLFG
3: NCMRNT THNDRL
4: BYNDTH RFTWKN
5: SHDWSS DRGNSF
6: FLLFCH NWSTRM
7: DTHWNG SSFZRT
8: CSTFBN SSLTNK
9: HRTFVL DPTMBF
10: BTTLFH LTRC
11: DNCFTH YFDLRN
12: BTTRTS DPDRKP

Tides of Darkness Level Codes
Human Orc
1: HLLBRD ZLDR
2: MBSHTM RDTHLL
3: HSTHSH RCSTHS
4: TTCKNZ SSLTNH
5: HTLBRD RCTLBR
6: DNLGZ BDLNDS
7: GRMBTL FLLFST
8: TYRHND RNSTNT
9: BTTLTD RZNGFT
10: PRSNRS DSTRCT
11: BTRYLN DDRSSQ
12: BTTLTC TMBFSR
13: SSLTNB SGFDLR
14: GRTPRT FLLFLR

PC to PSX cheats

glttrng = more gold,wood,oil
mkts = quick build
nscrn = show map
tsgddytd = invinsible
vrylttl = magic upgrade
dckmt = upgrade human/orcs & buildings
vldz = quick oil load