On the high score screen, type 'DEBBIE S' for unlimited lives. When you die, wait until the title screen appears. Press CAPS LOCK, then type 'DALEY-88'. You will then continue on the same level you died on. On the title page, type 'ROBOCOPPETER' for continuous mode. When you die, wait until the title screen appears. Press CAPS LOCK, then type 'MAGENTA'. Now when playing, hit 'S' to skip levels.