Iron Girl.

In a land far away, there is a legend that an Iron Clad Savior shall bestow upon the land and save its people from grief, abuse and evil. An armored suit-wearing woman with amnesia, only known as "Iron Girl", fights against a group of outlaws called "Crazy Dogs" to save a small village in the wasteland. Is she the legendary "Iron Savior" written in the old document of the village?