So, out of the 12 remaining eggs, 1 hatched on its own, then I decided to help out 6 weak shrink-wrapped ducklings that already external pipped and partly zipped but couldn't progress. Among these 1 have a deformed beak, and 1 has unclosed navel. 4 eggs appear to have quit, 1 among those was dead after internal pip. There is still 1 egg left in the incubator which only internally pipped and I tried to help out along with the other 6, but upon seeing blood I stopped.
Now I placed the 6 that I just helped out in quarantine, separate from the 6 that I'm keeping and the 7 other healthy ones. I don't place much hope on them. If they make it, good on them, if not then... can't be helped.
So out of 24 I hatched out 13 healthy ducklings, 6 weak ones, and another 1 still waiting for the veins and yolk sac to be absorbed.