Freezer Burn is basically “Cold Stream”… if Cold Stream was a “go forth/go back” campaign like Hard Rain.
You start on a roof, you have to go inside a building, do something, and then come back and avoid fire hazards. There’s not much difference on the “go back” portion of it besides the building being on fire, introducing a few hazards.
I found the finale area to be a bit wonky/a bit of a letdown (all the specials got stuck). All in all, it’s “a” campaign. Maybe slightly less than Valve quality, and that’s really all that can be said.