I found it pretty easy - the right answers seemed mostly obvious[0]. Wash hands, use the clean apron, use the sharp knife, don't touch corpses before surgery, don't try to do the surgery as fast as possible. The one I wasn't sure about was amputating below vs above the knee, but it turns out you succeed with either if you do most of the rest right (but it seems below the knee is better).
[0] Obvious to me, of course doctors at the time didn't understand germ theory.
"Wash hands" is crossed out if you choose it, "no time for that".
From what I've read, fast surgeries (not slow ones) were positively correlated with patient recovery. Wikipedia's page on Robert Liston (mentioned in another comment above) and Florence Nightingale both mention this.
[0] Obvious to me, of course doctors at the time didn't understand germ theory.