I have just finished binging the Blackwell series, first I played the game then I did another play through for the achievements. I'm sure that I've done walked back and through in every area until Joey says something smart alecky (I loved the one outside of the school when Joey says something about does she have to act like a child and she pretty much sticks her tongue out at him!). I even tried on top of the school but there was no prints made. But the achievement never popped up for me. I've since done some reading which says that the achievement in unable to be gotten. Is this true?
Happy Gaming!
Thank you

I found the information below in an achievement guide. There are 13 areas with snow; you have to do 12. I haven't tried it yet myself.

Snow Plow
Somebody's got to do it...
●●● Highly missable

Make Rosa walk back and forth over the snow in every snowy areas until Joey gets annoyed.

Karth House (opening area)
Police station (after interrogation, when Detective Durkin will be gone)
Grace Church
Lia Pierro's house
Exeter House
George Ostin's roof patio
Grace School
Field's Gym
Heather's old address
Vantini's
Vantini's backyard
Greenwood Cemetery
Grace School roof

Annoy Joey as soon as you enter a new snowy area, otherwise you might miss one
The achievement should unlock after any 12 areas, so you can miss one and still get it (try not to though). Rosa will reply she walks in order to keep herself warm.