It's an art game!
The bar is your willpower. You need it to shoot hearts and to defend yourself. Avoid the pit!
F - shoot the hearts. Each heart spends some willpower.
G - press to spend your willpower to protect yourself.
A,S,D - ask help to your friends, family and love to increase your willpower.
I've started this game during Ludum Dare 32, but unfortunately I couldn't finish it during the game jam.