In the mourning fields, in the room with the hammer. If you had taken the mana first, and the hammer last. Then picked the room with echo, you would have been able to receive a third hammer. Then you could have used the keepsake that gives you a random hammer when going to tartarus for a total of 4 hammers while fighting Cronos
Nice build as always ! You have the right to take a break if the game doesn't make you happy anymore. Its better to take a little break than being disgusted by the game for a long time. (Please, tell me if I do some grammar mistakes or anything else)