Lazarus' Rags

How do you unlock Lazarus' Rags?

In The Binding of Isaac, Lazarus' Rags is unlocked by earning the Isaac completion mark as Lazarus (Character).

[Before Repentance] Upon dying, resurrect as Lazarus Risen in the current room with one Red Heart container and Anemic. / [Repentance] Upon dying, resurrect as Lazarus Risen in the current room with one less Red Heart container, Anemic, and +0.5 Damage. Transform into Lazarus when reaching the next floor.