Ahh chalice dungeons . well as you said you have the ritual blood 1 , I don ' t know if your doing NG 2 or start a new character every time you beat the game . Anyway only thing you should still need is the pthumerian chalice which you get from killing the bloodstarved beast , which is ofcourse an optional boss you might ' ve skipped if you started a new character . And as mentioned previously above , walk to the empty gravestones on your left hand when you spawn in the hunters dream and take the 2 nd tombstone or the ones after it , choose chalice ritual the depth 1 pthumerian chalice dungeon should be standing there ready to make , conduct ritual and interact with the tombstone again , choose chamber of the seal and you would be spawned in the very first chalice dungeon .