Call of Cthulhu

I believe this is tied to the three patients one of the nurses at the front desk asks you to check on. Most likely, you'll have checked all three patients already so the nurse may not tell you about all three (she'll just tell you about any you missed). The three are:

1.) The patient going into shock near where you start the level, in the middle curtained area (aka not against the windowed wall). When you click on the patient, you'll notice the patient is going into shock and you'll call a nurse over to start a new IV.

2.) Halfway through the second section of patients, along the windowed wall, is a woman who was going to need a nephrectomy (kidney removal), though her charts shows Dr. Fuller saved the kidney. After check on her, her two sons are located on a bench out in the hallway, simply talk to them and let them know their mother will be alright to finish this requirement.

3.) At the back of the second patient area, along the windowed wall, is the last patient. When checking on this patient a nurse will ask you about the patient. You'll have to do several medicine checks on the patient, noting that the patient is frothing at the mouth and has injuries on his wrists. The nurse will ask what to do -- give any answer and this will solve the third requirement.

I don't think you need to look at every chart, though I don't know this for sure.

FYI, I missed the last nurse / the frothing at the mouth patient before talking to the men in the hallway about their mother. I thought I messed the achievement up.....BUT...

I went back and interacted with the nurse/patient and the achievement popped (in case you missed the interaction like me before talking to the two men in the hallway).