The following are known Action Replay Codes for Einhander on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Infinite Ammo
800848320063

Infinite Lives
800813c40003

Super Armor
800857180001

Invincible Weapons (Bottom Ammo Pod Position)
8008498003c0
80084cb203c0

Invincible Weapons (Top Ammo Pod Position)
8008483003c0
80084b6203c0