Each ending of Bloodborne, in order from least to most difficult to achieve.

Ending 1: Yharnam Sunrise
-Submit your life to Gehrman under the great tree
-Umbilical Cords irrelevant

Ending 2: Honoring Wishes
-Refuse to submit your life to Gehrman
-Kill Gehrman in the ensuing boss fight and view the following cutscene without consuming at least three One Third of Umbilical Cords
-Exiting the game after killing Gehrman but before viewing the cutscene allows you to purchase his armor set and Burial Blade weapon from the bath messengers before being forced into NG+

Ending 3: Childhood's Beginning
-Refuse to submit your life to Gehrman
-Kill Gehrman and view the following cutscene having already consumed at least three One Third of Umbilical Cords
-Kill the Moon Presence and view the following cutscene