It seems there was more then one release of this game. If one set of the following codes don't work try the other set.
1-"BUILD1" | 3-"BEARBY" | 5-"DIABLO"
2-"YOTTHA" | 4-"OCTOPY" | 6-"GOTIUS"
or
1-"BUILD1" | 3-"BOOLER" | 5-"GHOSTS"
2-"BAROCK" | 4-"MARIBA" | 6-"OUTLAW"