vizthex has just submitted some Achievement Flag Info for
Left 4 Dead 2 Achievements:
vizthex said:Collectible since you have to find him.
Needs the time/date flag.
The MEAT TENDERIZER achievement in Left 4 Dead 2 worth 20 pointsAs the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds. Needs the time/date flag.
The WEDDING CRASHER achievement in Left 4 Dead 2 worth 49 pointsAs the Charger, grab a Survivor and crash them through 8 chairs at the wedding. Cumulative, but progress can be lost
Cumulative, but progress can be lost
Can also be done in co-op.
And since it's a campaign, it's also technically part of the "main story".
I checked around and it seems like you can only get this by editing your computer's date & time, so it's partially discontinued.
Also collectible since you have to find and then pick up the gifts.