Type in the following code during gameplay:
SET 1 | CHEAT | SET 2 -------------|-----------------|-------------- DDDNSTBR | Invincibility | LLSNMRTN NDNLP | Spirit Mode | MBRNKLSN THMSCLS | All Weapons | MGRLSGTM LNJHNSN | Unlimited Ammo | RHNSRLL JFFSPNGDNBRG | Infinite Lives | JFFSPNGDNBRG NGLCKCK | All Keys | DGHTTSRS JSNCRPNTR | Full Map | TRNTNNQ BKSTRD | Fly Mode | KNTSFSKS MTTSTBBNGTNB | Level 1 Warp | PTLFGNDS DRRNSTBBNGTN | Level 2 Warp | QTMBGS MKJNK | Level 3 Warp | GTMNDSBF PTNDNCN | Level 4 Warp | NCPGHM NNTND | Level 5 Warp | RSTPDFRPL TRMNN | Level 6 Warp | BGRSD JMDNN | Level 7 Warp | NBCD MRGRTTRR | Level 8 Warp | LFRRSPR JHNTHMS | Longhunter Warp | CRCDND STPHNBRML | Mantis Warp | CTNTSCND GRGMLCHCK | Trex Warp | THSFNDNT RNTRC | Campaigner Warp | HSTSMN RBCHN | Big Heads | PRMSHN GNNTRTMNT | Tiny Enemy | HFLLTHSH CRLSFNDNGS | Purdy Colors | CRLSFNDNGS SHNTRRNT | Gallery Mode | HTSDNM THTRTMBB | Show Credits | LRNMSNHR DNLDDCK | Quack Mode | GSRCGKFS FHGTBC | Show Enemies | TKMDKK JHNNCK | Disco Mode | BGGNTSS