Just in! With the free giveaway, a new achievement has appeared and is rumored to only be active for a very short while:

Left 4 Dead 2 - GHOST OF CHRISTMAS PRESENT

Newly added (Source: 100% achievement hunters):

Electronic Super Joy via Bonus Content DLC? (unsure if time sensitive, probably not)
Draw a Stickman: EPIC! (probably not time sensitive)
Interstellar Marines - "Hasta La Vista, Baby!" and "Xmayhem Terminator"
SNOW - Merry Christmas (unknown if time sensitive)
Hammerwatch - Xmas 2013 (probably time sensitive)
Football Manager 2012 - Merry Xmas!
PAYDAY 2 - "Reindeer Games", "Merry Xmas!", and "Dead Presents"
Droid Assault - Crusher

Steam:

TIME SENSITIVE:

Cave Story+ - Merry Holiday Happy Euphemism
Costume Quest - Tisn't the Season
Psychonauts - Christmas Shopping
B.U.T.T.O.N. - Awkward Christmas
The Dead Linger - Crappy Gifts This Year?
Serious Sam 3: BFE - Christmas in Cairo
Serious Sam 3: BFE - Reindeer Hunter (PROBABLE)
Revenge of the Titans - DISAPPOINTING PRESENTS (Defeated 1 Xmas Ultrayeti)
ROTT - DRUNKEN FAMILY ARGUMENT (Hurrah! Christmas is finally over!)
ROTT - NO-ONE LIKES XMAS PUDDING (Defeated 3 Xmas Ultrayetis)
ROTT - SPROUT FLATULENCE (Defeated 4 Xmas Ultrayetis)
ROTT - UNDERCOOKED TURKEY (Defeated 2 Xmas Ultrayetis)
GundeadliGne - Holiday in Hell
Gundemonium Recollection - Polaris (PROBABLE)
Hitogata Happa - Sweet Tooth (PROBABLE)
EDGE - Snowblind
RUSH - Santa's Little Helper
Toki Tori - Catch a Cold
DEFCON - Merry Christmas
Killing Floor - various achievements
Spiral Knights - Son of a Nutcracker
CrimeCraft Gangwars - Snow Ballin' (time sensitive but may not be supported any longer?)
HOARD - Ruin Christmas (possible)
Day of Defeat, Left 4 Dead 2, Team Fortress 2, Counter Strike Source, etc. - Gift Grab (may be restricted to late december 2011)

NOTE: Some of these are ripped from the 2011 Winter Sale achievement lists, and thus they may not actually truly be Christmas achievements

† - indicates that the game will probably get something Christmas related based on speculation

AAaaaAAaaaAAaaaAAaaaAAaaa! For the Awesome
AI War: Fleet Command
Air Conflict - Secret Wars
And Yet It Moves
Anomaly: Warzone Earth
Atom Zombie Smasher
AudioSurf
Bastion
Batman: Arkham City
Beat Hazard
The Binding of Isaac
BIT.TRIP BEAT
Bunch of Heroes
Cargo! The Quest for Gravity
Cave Story+
Cities in Motion
Costume Quest
Counter-Strike: Source
CrimeCraft GangWars
Day of Defeat: Source
DEFCON
Defense Grid: The Awakening
Demolition Inc.
Dungeon Defenders
Dungeons of Dredmor
EDGE
E.Y.E.: Divine Cybermancy
Fate of the World
Flight Control HD
Frozen Synapse
A Game of Thrones - Genesis
Greed Corp
Guardians of Graxia
Hard Reset
HOARD
Jamestown
Jurassic Park: The Game
Killing Floor
Left 4 Dead 2
Orcs Must Die!
PAYDAY 2†
Magicka
Men of War: Assault Squad
Nuclear Dawn
Painkiller: Hell & Damnation
PAYDAY: The Heist
The Polynomial - Space of the Music
Post Apocalyptic Mayhem
Psychonauts
Puzzle Agent 2
Red Orchestra 2: Heroes of Stalingard
Renegade Ops
Revenge of the Titans
Rise of Immortals
Rock of Ages
Rusty Hearts
RUSH
Sanctum
Sequence
Serious Sam 3: BEF
Solar 2
Space Pirates and Zombies
SpaceChem
Spiral Knights
Super Meat Boy
Swords and Soldiers HD
Team Fortress 2
Toki Tori
Total War: SHOGUN 2
Trine
Tropico 4: Steam Special Edition
Universe Sandbox
A Virus Named Tom
Warhammer 40,000: Space Marine
Warhammer 40,000: Dawn of War II: Retribution
Wings of Prey
Worms Reloaded
X3: Albion Prelude
Xotic

Steam games with Christmas events:

Dota 2 (if volvo gibs it)
Killing Floor
Terraria

Non-Steam:

LittleBigPlanet 2
World of Warcraft

I'll update this if anyone can think of others :hee:

11 years ago*

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For the non Steam, at least two of the Simpsons games on PS2 and other systems did. The Crazy Taxi clone and the free roam game.

11 years ago
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Thanks Monukai!! I was just searching for this an hour ago, with poor results :/

11 years ago
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where did you see there will be an achievement event?

11 years ago
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Where did you see him say that? He said they had Christmas achievements. That simple means you need to earn some during that time.

11 years ago
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or change your windows calendar?:D at most cases

11 years ago
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nice ! thanx

11 years ago
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Why "Killing floor" is not in "Games with Christmas events"?

11 years ago
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Because he doesn't admit to knowing all of them, and does want help improving the list.

11 years ago
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well that list was for games without achievements, KF is listed above, but I guess it makes more sense to keep a list of all games with events as well (regardless of whether or not they have achievements), i shall fix this

11 years ago
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payday 2

11 years ago
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I'll probably stop by and see Calendar Man again for Thanksgiving in Arkham City.

11 years ago
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KF <3

11 years ago
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Non-steam game with Christmas events and achievements:
World of Warcraft
(Yeah, I said it, now what?)

11 years ago
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hope i can buy/win warhammer for winter :D

11 years ago
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You should remove Rock of Ages, Bastion and Trine, because they don't have christmas achvs.

11 years ago
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Bump, if there is still some achievements hunters here, here are some informations:
A huge amount of listed game in the OP message doesn't have Christmas achievements that you need to do during the Christmas period.
95% of the game in the list are listed because of that.
I have checked manually for games I have, and for games that I don't have these Christmas achievements, but as I have 90% of those games, I'm probably don't missing so many things.

Anomaly Warzone Earth: the Christmas achievement is dead, there is a hope to get it back, but a little hope.
Revenge of the Titans: it's time to get it.
Cave Story+: run the game the 25th.
DEFCON: Play the 24th.
EDGE: Can be obtained in december, but not only in december.
E.Y.E.: no more available.
Nuclear Dawn: maybe avaible when the update come (the update is maybe already available, I don't know.
Serious Sam 3 BFE: Play the 24th

My list is not complete, feel free to add your informations for others games !

10 years ago
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Serious Sam 3 Christmas in Cairo is achieveable for a longer period than just the 24th, that was just an arbitrary date he suggested for moving the clock. There is a new Serious Sam 3 achievement that was added just recently, 0% have completed it, you can see it in global stats, it's definitely a holiday related achievement though and quite possibily time restricted.

GundeadliGne's "Holiday in Hell" seems to be date specific, and I wouldn't be surprised if the holiday achievements for Higotta Happa and Gundemonium Recollection are also time specific (they should be working currently)

Costume Quest, The Dead Linger, Psychonauts, and B.U.T.T.O.N. also have achievements for playing on the 25th (in addition to Cave Story, that is), BUTTON's can be obtained on the 24th or the 25th. The Dead Linger has other holiday achievements, but I have no clue whether they are time sensitive or not, Pyschonauts also has another holiday achievement besides doing something on Christmas day, I'm not sure if it's time sensitive or not, off hand

Killing Floor is definitely time sensitive (since it requires the right type of zeds)
I think RUSH and Toki Tori are also time sensitive (like EDGE...same developer)
HOARD is probably time sensitive..needs confirmation though
Spiral Knights and CrimeCraft Gangwars are both time sensitive afaik, the Christmas update is live for Spiral Knights until Jan 2nd, so that should be live now
Valve games are all time sensitive (Gift Grabs), most of which (if not all) need to have the clock set to 2011 holiday sale dates (also needs confirmation)

10 years ago
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Christmas bump!
(just visited Calendar Man again in Arkham City, and I'm about to finally finish off my Psychonauts achievements! :))

10 years ago
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New! I've heard that this achievement could be unobtainable as soon as 10 AM PST (although I'd hope it'd last a big longer than that...)

Left 4 Dead 2 - GHOST OF CHRISTMAS PRESENT

10 years ago
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this new l4d2 achievement is actually in the running for my rarest achievement.

10 years ago
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If you do not get these, will you ever be able to get 100% in that game?

10 years ago
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Deleted

This comment was deleted 6 years ago.

10 years ago
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Closed 10 years ago by Monukai.