I'm feeling really angry at the moment. I've just finished playing for half a day trough the game (2nd time), and after all missions i've got all 0, undetected and no kills stats.
So imagine my surprise, turning into anger when i only saw the Shadow achievement appearing. Either someone wrote the wrong information for Ghost and Clean Hands achievements, or this is a huge bug.
Since someone had the stupid idea to limit the number of total saves, i've overwritten saves from previous missions with those of new ones (saved often so i could move further back in case i did something wrong). So i don't have the intention of redoing the runs for those achievements since they're pretty hard for me, and also time consuming.
Although i like this game a lot, the simple fact i've done all the efforts of trying to get the achievements and got nothing is simply making me want to abandon it. Why should i try different paths when i won't have any proof to show to anyone?

Killing dogs or sleepdarting Granny Rags will ruin the Clean Hands achievement, even though they aren't counted as kills on the stat screen.

I didn't do the Granny Rags part in the Mission 2, so i didn't have to go and fight her in the Flooded District part. And i mainly used the powered up blink, and powered up bend time to avoid ennemies. Interacted only with main targets, and was seen only by friendlies (those in the sewers in the Flooded District, and i didn't have any interaction with animals). I read the post explaining how those work in here, so i knew what to watch out for.