i believe what u r missing are the side quests:
Jingle bells
Light my fire
Gnome regrets
Sweetheart
Blackout
Log out
I will post what I know about them quests from what I read.
Lmao dude all of those are from a single quest following one after the other. Basically after you have talked a lot with Melissa (asking for quests in the kitchen), she will talk to you about heading to the mountains. There's when Jingle bells is done, the rest of the quests will follow up in those mountains.