You have unlocked EvE

This is a character from the game The Binding of Isaac. A really neat game :3 (though just got it myself) I've seen Let's plays by Northernlion on Youtube.com

This character is called EvE the whore of Babylon. Her power is that when she gets low on hp she gets the curse which gives her more damage. Also whenever she is hit she gets the dead bird to help her dealing damage .. pretty cool :3

The Binding of Isaac and EvE belongs to I believe Edmund Mcmillen.