The following are known Game Genie Codes for Undead Line on SEGA Genesis.

• Infinite Health
  AJFT-AA78
  Note: This does not happen until after you lose your 1st life.
• Infinite Lives
  AJFT-AA5W
• Infinite Bombs
  AJHT-AA6L
• 1-Hit And You Die
  AJFA-AA9W