Level Select:

Enter at the input code area on the 
opening screen: 

Stage 1 TRGHTR Stage  9 GNRLMN 
Stage 2 TDBWL Stage  10 HTTTRT 
Stage 3 MSTRMN Stage 11 ZBTSRL 
Stage 4 TLLTRS Stage 12 HTKTTN 
Stage 5 SCRDCT Stage 13 PTSPNS 
Stage 6 STPDMN Stage 14 HXMSTR 
Stage 7 BLZZRD Stage 15 VRCLN 
Stage 8 SRFPNK Stage 16 BTTLN